Document:

<PAGE>
                                                                    Exhibit 4.18

                                                                  EXECUTION COPY

THIS PLEDGE AGREEMENT (the "Agreement") is entered as of this 20th day of June,
by and among:

     (i) SIMMTECH CO. LTD, a company duly incorporated and existing under the
     laws of Korea and having its principal place of business at 70-5
     Songjung-Dong, Heung Duk-Ku, Choungju, Chungchongbuk-do, Korea 361-290 (the
     "Pledgor"); and

     (ii) ST ASSEMBLY TEST SERVICES LTD., a company duly incorporated and
     existing under the law of Singapore and having a place of of business at 5
     Yishun Street 23, Singapore 768442 (the "Pledgee").

                                    RECITALS

WHEREAS:

A.   By the Strategic Assistance Loan Agreement dated as of June 20, 2003 (the
     "Loan Agreement") made by and between the Pledgor and the Pledgee, the
     Pledgee has agreed, subject to and upon the terms and conditions contained
     therein, to provide a loan to the Pledgor in the amount of USD 5 million;

B.   The Pledgor is the legal and beneficial owner of the Securities (as defined
     below);

C.   For the purposes of securing the Secured Obligations (as defined below),
     the Pledgor hereby agrees to, inter alia, deposit with and pledge to the
     Pledgee the Securities (as defined below) pursuant to terms and conditions
     herein.

NOW, THEREFORE, it is agreed as follows:

SECTION 1. INTERPRETATION

Words and expressions defined in the Loan Agreement shall, unless otherwise
defined herein or the context otherwise requires, have the same meaning when
used in this Agreement. References to any agreement or document shall be
construed as references to such agreement or document as

<PAGE>

varied, amended, novated or supplemented from time to time. In addition thereto,
as used in this Agreement:

1.1  "Securities" shall mean the securities described in Schedule I hereto.

1.2. "Secured Obligations" shall mean (i) any and all obligations, liabilities
     and indebtedness of the Pledgor owing to the Pledgee, presently existing or
     to be incurred hereinafter under or with respect to the Loan Agreement,
     (ii) moneys, obligations and liabilities owing and payable by the Pledgor
     to the Pledgee under the Yangdo Tambo Agreement dated June 20, 2003 between
     the Pledgor and the Pledgee and (iii) moneys, obligations and liabilities
     owing and payable by the Pledgor to the Pledgee under this Agreement.

1.3. "Proceeds" means all proceeds of, and all other profits, income or
     receipts, in whatever form and whatever currency, arising from the
     ownership, collection, sale, exchange, assignment or other disposition of,
     or realization of any of the Securities, and all interest, dividends (cash,
     stock or otherwise) and other payments and distributions on or with respect
     to such Securities or in exchange for such Securities.

SECTION 2. PLEDGE

2.1. The Pledgor hereby agrees to pledge the Securities to the Pledgee and
     hereby agrees to grant in favor of the Pledge a first priority security
     interest (jilkwon) in the Securities and the Pledgee shall accept the
     security interest in the Securities for the due and punctual payment,
     performance and discharge of the Secured Obligations. The Pledgor hereby
     agrees that any Proceeds of any Securities on which a pledge under this
     Agreement has been established and perfected shall be subject to the pledge
     (jilkwon) on such Securities pursuant to this Agreement and that if any
     such Proceeds may not be subject to such pledge, the Pledgor shall pledge
     the Proceeds for the benefit of the Pledgee in the manner applicable to the
     nature of it and perform any and all actions necessary for the
     establishment and effectuation of such pledge under the laws of Korea.

2.2  Simultaneous with, or prior to the provision of the Loan on the Loan Date,
     the Pledgor shall have the Pledgee's name and address recorded in the
     shareholders' registry of the Pledgor (maintained with the Korea Securities
     Depository) as a holder of the security interest (jilkwon) in the
     Securities and have the Pledgee's name recorded on the share certificates
     representing the Securities.

2.3  Immediately upon performance of Section 2.2 hereof and on or one (1)
     business day prior to the provision of the Loan on the Loan Date, the
     Pledgor shall deliver or cause to be delivered the share certificates
     representing the Securities in physical form to the Pledgee or to the agent
     of the Pledgee, as requested by the Pledgee together with a certified copy

                                       2

<PAGE>

     of the shareholders' registry of the Pledgor and any documents necessary to
     constitute a legally valid delivery of the certificates.

SECTION 3. REPRESENTATIONS AND WARRANTIES

The Pledgor hereby represents, warrants and covenants to the Pledgee that:

     (a)  the execution, delivery and performance by the Pledgor of this
          Agreement have been duly authorized by the Pledgor, and are not in
          conflict with any provision of any applicable laws or the articles of
          incorporation of the Pledgor;

     (b)  the execution, delivery and performance by the Pledgor of this
          Agreement does not violate or cause any default under any indenture,
          agreement or undertaking by which the Pledgor is bound;

     (c)  all authorization required from any government or governmental agency
          in connection with this Agreement have been obtained and are in full
          force and effect;

     (d)  this Agreement constitutes valid obligations of the Pledgor, legally
          binding upon it and enforceable in accordance with its terms, subject,
          as to enforceability, to laws relating to bankruptcy, insolvency,
          liquidation, reorganization, court schemes, moratoria, administration
          and other laws generally affecting the rights of creditors;

     (e)  the Pledgor has full right, title and interest over the Securities;

     (f)  the Pledgor has not agreed to sell, assign, transfer, pledge or create
          any other interest or other lien in or over all or any part of the
          Securities other than in favor of the Pledgee hereunder or as
          otherwise permitted under the Loan Agreement;

     (g)  no person (other than the Pledgor and the Pledgee) is exercising, has
          exercised or attempted to exercise any ownership interest or other
          lien over any of the Securities;

     (h)  to the knowledge of the Pledgor, there are no circumstances that would
          diminish the value of the Securities;

     (i)  the Pledgor has not taken any corporate action nor have any other
          steps been taken or legal proceedings been started by it or any third
          party for its winding up, dissolution, reorganization or bankruptcy or
          for the appointment of a receiver, trustee or similar officer over the
          Pledgor or its assets or revenues, and there occurs or continues no
          cause/event that may lead to such action or steps; and

                                       3

<PAGE>

     (j)  the Pledgor has acquired the Securities in accordance with any
          provision of any applicable laws or the articles of incorporation of
          the Pledgor and has been, and during the term of the Loan Agreement
          will be, permitted to have right, title and interest over the
          Securities under such laws and articles of incorporation.

SECTION 4. COVENANTS OF THE PLEDGOR

The Pledgor covenants and undertakes the following with the Pledgee:

     (a)  duly and punctually to observe and perform all the conditions and
          obligations imposed on it by the Loan Agreement and this Agreement;

     (b)  not, without the prior written consent of the Pledgee, to attempt to
          sell, assign, transfer, create any lien over, or otherwise disposed of
          any of the Securities to or in favor of any person other than the
          Pledgee;

     (c)  to do or permit to be done each and every act or thing the Pledgee may
          from time to time reasonably require to be done for the purpose of
          enforcing the Pledgee's rights under this Agreement or in respect of
          any of the Securities and to allow its name to be used as and when
          required by the Pledgee for such purpose;

     (d)  to make all registrations, filings and recordings, and take all other
          actions as are necessary or reasonably determined by the Pledgee to be
          advisable to ensure the continued legality, validity, enforceability,
          priority and admissibility in evidence of this Agreement;

     (e)  to be responsible for the resolution of any disputes with a third
          party in connection with the Securities, including any disputes
          involving claims against the Securities, and in connection therewith,
          the Pledgor agrees not to take any action which might adversely affect
          the enforcement of the Pledgee's rights or Pledgee's interests in the
          Securities and to affirmatively protect and defend such rights and
          interests in consultation with the Pledgee;

     (f)  to conduct its business in accordance with any applicable laws and
          regulations;

     (g)  to pay all taxes, assessments and other governmental charges of any
          kind imposed on or in respect of its income or any of its business
          when due;

     (h)  to notify the Pledgee of any and all notices that the Pledgor has
          provided to its shareholders in their capacity as shareholders, at the
          same time as such notice;

                                       4

<PAGE>

     (i)  if and when it is required to or entitled to vote, give any consent or
          exercise any other rights with respect to the Securities, to first
          notify such situation to the Pledgee immediately and act in accordance
          with the instruction of the Pledgee;

     (j)  not to make or cause to make any action, procedure or event that would
          diminish the value of the Securities; and

     (k)  to notify the Pledgee of any event that would result in or lead to a
          breach of any representation and warranty provided under Section 3
          immediately upon becoming aware of such event.

SECTION 5. ADMINISTRATION OF SECURITIES

5.1  Until there shall have occurred an Event of Default or an event which with
     notice, lapse of time or both would constitute such an Event of Default,
     the Pledgor shall be entitled to vote, give any consent or exercise any
     other rights with respect to the Securities in any manner not inconsistent
     with this Agreement and subject to applicable law.

5.2  Unless an Event of Default has occurred and is continuing, and without
     prejudice to Section 2 hereof, the Pledgor shall receive or shall become
     entitled to receive, any dividend, interest or any other distribution
     whether in securities or property (including cash) with respect to the
     Securities by way of stock-split, spin-off, split-up or reclassification,
     combination of shares or the like. For the avoidance of doubt, any
     distributions (whether in cash or in shares or other property) received by
     the Pledgor shall be deemed to be the Proceeds and subject to the pledge
     created under this Agreement, and if any such Proceeds may not be subject
     to such pledge, the Pledgor shall pledge the Proceeds for the benefit of
     the Pledgee in the appropriate manner and perform any and all actions
     necessary for the establishment and effectuation of such pledge under the
     laws of Korea.

SECTION 6. ATTORNEY-IN-FACT

The Pledgor shall be deemed to irrevocably appoint the Pledgee as its true and
lawful attorney-in-fact with full power to require, demand and receive any and
all moneys and claims for money due and to become due under or with respect to
the Securities to the extent pledged hereunder and to take any action or execute
any instrument which the Pledgee may deem necessary to accomplish the purpose
hereof.

                                       5

<PAGE>

SECTION 7. TERMINATION AND REASSIGNMENT

The term of this Agreement shall begin on the date of this Agreement and end on
the date on which all Secured Obligations shall have been unconditionally and
irrevocably paid and discharged in. Upon termination of this Agreement, the
Pledgee shall release the security interest in the Securities held by the
Pledgee, return the share certificates representing the Securities to the
Pledgor at the cost of the Pledgor and take any actions as may be reasonably
requested by the Pledgor to effectuate such release.

SECTION 8. ENFORCEMENT BY PLEDGEE

8.1  If any of the Secured Obligations becomes due and payable, the Pledgee
     shall be entitled, as and when it may see fit, to put into force and to
     exercise all or any of the rights and power possessed by it as pledgee of
     the Securities under the applicable laws and this Agreement in or towards
     satisfaction of the Secured Obligations, including without limitation, the
     right and power to:

     (a)  sell, transfer or otherwise dispose of the Securities at such times
          and at such prices as are generally recognized as appropriate in
          custom and practice, without the necessity of any legal process or
          procedure ;

     (b)  acquire title to the Securities in lieu of foreclosure of the
          Securities in any manner in its discretion without notice to the
          Pledgor ; and

     (c)  demand, sue for, collect or receive, in the name of the Pledgor, any
          money or property at any time payable or receivable on account of or
          in exchange for any of the Securities, but shall be under no
          obligation to do so.

8.2  Upon the exercise of its rights pursuant to Section 8.1. hereof, the
     Pledgee shall apply the Proceeds, after deducting the costs of such
     exercise of rights, against the Secured Obligations. Any excess amount
     shall be paid to the Pledgor and any Secured Obligations not fully covered
     by the Proceeds shall remain due and owing and shall promptly be paid by
     the Pledgor. In the case of acquisition of the title to the Securities
     pursuant to Section 8.1.(b) hereof, the Pledgee shall value the Securities
     based on commercially reasonable standards and return any excess amount
     (net of any and all costs and taxes involving transfer of the ownership of
     the Securities) to the Pledgor and any Secured Obligations not fully
     covered by the value of the Securities shall remain due and owing and shall
     promptly be paid by the Pledgor.

8.3  The Pledgor hereby consents to the procedures set out in Sections 8.1 and
     8.2 above and waives any and all objections it may have thereto.

8.4  The Pledgee shall incur no liability as a result of the sale, acquisition
     or any other disposition of the Securities or any part thereof by the
     Pledgee pursuant to Section 8.1

                                       6

<PAGE>

     hereof conducted in a commercially reasonable manner. The Pledgor hereby
     waives any claims against the Pledgee arising by reason of the fact that
     the price at which the Securities has been sold at any private sale by the
     Pledgee may be less than the price at which it could have been sold if the
     Pledgee had not accepted the first offer received or had offered the
     Securities to more than one offeree.

8.5  The application of the Proceeds shall be determined by the Pledgee in its
     absolute discretion, subject only to any other agreements between the
     Pledgee and the Pledgor relating thereto and to the requirements of any
     applicable law.

8.6  In case where the Pledgor or a third party provides collateral (other than
     the Securities) to the Pledgee to secure all or any part of the Secured
     Obligations, the Pledgee shall in its sole discretion have the authority to
     determine the priority and extent of enforcement between/among its rights
     under this Agreement and such other collateral arrangements, without the
     necessity of any legal process or consultation with the Pledgor.

SECTION 9. ASSIGNMENT

This Agreement and the security interest created hereunder shall be binding upon
and inure to the benefit of the Pledgor and the Pledgee and their respective
successors and assigns. The Pledgee may, in accordance with the Loan Agreement
and applicable laws, at any time assign all or any part of its rights or
obligations hereunder to any party (each an "Assignee"). The parties hereto
agree that to the extent of any transfer, the Assignee shall be deemed to have
the same rights and benefits under this Agreement as it would have had if it
were a Pledgee signatory hereunder. The Pledgor may not assign any of its rights
or obligations hereunder without the prior written consent of the Pledgee.

SECTION 10. FURTHER ASSURANCE

The Pledgor shall do all such acts as may be necessary or appropriate including,
but not limited to, the execution and delivery of all further instruments,
notices and documents and all further action (whilst acting in a commercially
reasonable manner) that may be necessary in order to perfect and/or protect any
lien granted or purported to be granted hereby or to enable the Pledgee to
exercise and enforce its rights and remedies hereunder with respect to the
Securities and the Proceeds.

SECTION 11. EXPENSES, TAXES AND INDEMNIFICATION

The Pledgor shall be liable for and shall indemnify the Pledgee on demand
against, and shall pay, (a) the reasonable costs, expenses, taxes and other
liabilities incurred by the Pledgee to protect or

                                       7

<PAGE>

enforce the Pledgee's interest in the Securities and the Pledgee's rights
against the Pledgor under this Agreement, provided that any such enforcement
shall be in a commercially reasonable manner; (b) all withholding, excise and
other taxes and duties, and all reasonable costs, expenses and other
liabilities, incurred by the Pledgee in connection with, or otherwise
attributable to, receipt by the Pledgee of, or payment by Pledgor of, any
reasonable costs, expenses and other liabilities and indemnities provided for in
this Section or any other provision of this Agreement, other than taxes imposed
on overall net income of the Pledgee.

SECTION 12. MISCELLANEOUS

12.1 Notices. All notices, requests and demands to or upon the respective
     parties hereto to be effective, shall be in writing and shall be personally
     delivered or sent by facsimile (with subsequent written confirmation) or by
     registered or certified first class mail, postage prepaid, return receipt
     requested, or by overnight (or next business day) courier service shall be
     deemed to have been duly given or made when delivered by hand, on the day
     that such facsimile is transmitted, or, if by first class mail, five days
     following the date on which such writing is deposited with the postal
     service, or the day after the date when deposited with an overnight (or
     next business day) courier service, addressed as follows, or to such other
     address as either party hereto may hereafter specify in writing to the
     other party:

     To:           ST Assembly Test Services Ltd
                   5 Yishun Street 23
                   Singapore 768442
     Attention:    Director, Legal
     DID:          65 6824 1948
     Fax:          65 822 7837

     To:           SimmTech Co. Ltd
                   70-5 Songjung-Dong
                   Hueng Duk-Ku
                   Choungju, Chungchongbuk-Do
                   Korea
     Attention:    Chief Marketing Officer
     DID:          82-43-269 9280
     Fax:          82-43-269 9048

12.2 Severability. If any of the provisions of this Agreement shall contravene
     any law or regulation or be held invalid, this Agreement shall be construed
     as if not containing those provisions, and the rights and obligations of
     the parties hereto shall be construed and enforced accordingly.

                                       8

<PAGE>

12.3  Amendments, Changes and Modifications. This Agreement shall not be
      amended, changed, modified, altered or terminated, unless the prior
      written approval of each of the Pledgor and the Pledgee is obtained. This
      Agreement shall not be amended by an oral agreement.

12.4  Counterparts. This Agreement may be executed in multiple counterparts,
      each of which, when executed, shall constitute an original but all of
      which together shall constitute one and the same instrument.

12.5  Heading. Headings and titles herein are for convenience only and shall not
      affect the construction or interpretation of this Agreement.

12.6  Entire Agreement. This Agreement is intended by the parties as the written
      final expression of each party's obligations and rights in connection with
      the Securities and supersedes all prior and contemporaneous understandings
      or agreements concerning the subject matter hereof.

12.7  Conflict. In the case of a conflict between the provisions of this
      Agreement and the provisions of the Loan Agreement, the Loan Agreement
      shall prevail.

12.8  No Waiver. The Pledgee shall not, by any act, delay, indulgence, omission
      or otherwise, except by an express written instrument clearly indicating
      an intention to waive, be deemed to have waived any right or remedy
      hereunder or to have acquiesced in any Event of Default. No failure to
      exercise, nor any delay in exercising on the part of the Pledgee, any
      right, power or privilege hereunder shall operate as a waiver thereof. No
      single or partial exercise of any right, power, privilege hereunder shall
      preclude any other or further exercise thereof or the exercise of any
      other right, power or privilege.

12.9  Remedies Cumulative. The rights and remedies provided herein are
      cumulative and may be exercised individually or concurrently, and are not
      exclusive of any other rights or remedies provided by law.

12.10 Currencies. All Secured Obligations under this Agreement are payable in
      United States dollars ("the Required Currency"). If the Pledgee receives
      or recovers any moneys in any other currency, whether upon enforcement of
      its rights under this Agreement or otherwise, the Pledgor shall indemnify
      the Pledgee against the difference (if any) between the amount received by
      the Pledgee when it converts amounts received in currencies other than the
      Required Currency to the Required Currency and the amount due in the
      Required Currency. The Pledgor shall assist the Pledgee at all times to
      obtain any exchange conversion approval required by the Pledgee in
      connection with this Agreement or the Secured Obligations.

                                       9

<PAGE>

12.11 Governing Law and Jurisdiction. This Agreement and the security created
      pursuant hereto shall be governed by the laws of Korea in all respects,
      including matters of construction, validity and performance. The parties
      hereto agree to submit to the non-exclusive jurisdiction of Seoul District
      Court for the purpose of this Agreement.

IN WITNESS WHEREOF, the parties hereto have caused this Pledge Agreement to be
duly executed as of the day and year first above written.

               PLEDGOR:         SIMMTECH CO. LTD

                                By /s/ Se-Ho Chun
                                   ---------------------------------------------
                                   Name: Se-Ho Chun
                                   Title: Representative Director

                                In the presence of: /s/ C. H. Oh
                                                    ----------------------------

               PLEDGEE:         ST ASSEMBLY TEST SERVICES LTD

                                By /s/ Tan Lay Koon
                                   ---------------------------------------------
                                   Name: Mr. Tan Lay Koon
                                   Title: President and CEO

                                In the presence of: /s/ Suh Tae Suk
                                                    ----------------------------

                                       10

<PAGE>

                                   SCHEDULE I

Description of Securities

700,000 shares of common stock of the Pledgor in denominations as the following:

<TABLE>
<CAPTION>
Serial Number             Denomination            Number of share certificate(s)
-------------             ------------            ------------------------------
<S>                       <C>                     <C>
A-Je 000443~000482        10,000 shares                        40
A-Je 000881~000890        10,000 shares                        10
A-Je 000905~000924        10,000 shares                        20
</TABLE>

                                       11<PAGE>

                                                                    EXHIBIT 4.19

              This Agreement is dated the 26th day of December 2003

                                     BETWEEN

                          ST ASSEMBLY TEST SERVICES LTD

                                       AND

                                SIMMTECH CO. LTD

                                       AND

                                   SE-HO CHUN

               -------------------------------------------------
                                 LOAN AGREEMENT
               -------------------------------------------------

                            C:\Simmtech\LoanAgreement
                          ST Assembly Test Services Ltd
                               5 Yishun Street 23
                                Singapore 768442
<PAGE>
THIS AGREEMENT is made on December 26, 2003.

BETWEEN:

1.   ST ASSEMBLY TEST SERVICES LTD, a company incorporated under the law of
     Singapore and having a place of business at 5 Yishun Street 23, Singapore
     768442 ("STATS")

2.   SIMMTECH CO. LTD, a corporation organized and existing under the laws of
     Korea and having its principal place of business at 70-5 Songjung-dong,
     Heungduk-ku, Choungju, Chungchongbuk-do, Korea 361-290 ("SIMMTECH")

3.   MR. SE-HO CHUN, a Korean national with resident number 560515-1005415,
     holding 39.9% of the issued shares of Simmtech as of the date hereof
     ("MAJOR SHAREHOLDER")

WHEREAS:

Simmtech has requested STATS and STATS has agreed to grant a loan amounting to
United States Dollars Fifteen Million only (US$15,000,000.00) on the terms and
conditions hereinafter set out.

NOW IT IS HEREBY AGREED as follows:

1    DEFINITIONS

1.1  In this Agreement, unless the context otherwise requires, the following
     words shall have the following meanings:-

     "Agreement Term" means the period commencing from the Loan Date and ending
     on the Loan Repayment Date;

     "Banking Day" means a day on which banks are open for business in Seoul,
     Korea and Singapore

     "Borrowed money" includes any indebtedness (1) for or in respect of money
     borrowed or raised (whether or not for cash), by whatever means (including
     acceptances, deposits, discounting, factoring, finance leases, hire
     purchase, sale-and-lease back, sale-and-repurchase and any form of
     "off-balance sheet" financing) or (2) for the deferred purchase price of
     assets or services;

     "CTS Agreement" means the Capacity and Continuing Support agreement dated
     as of the date hereof between Simmtech and STATS whereby Simmtech has
     agreed to provide continuous cost improvement, technology support and other
     services to STATS on the terms set out therein;

     "Equipment" means the machinery and equipment listed in the list attached
     hereto as Annex A which represents the equipment which Simmtech will
     purchase with the Loan monies;

     "Event of Default" means one of the events mentioned in Clause 9;

                                       2
<PAGE>
     "Factory Kun-Mortgage" means the mortgage agreement dated as of the date
     hereof between Simmtech (as mortgagor) and STATS (as mortgagee) whereby
     Simmtech will grant a kun-mortgage over certain property described therein
     to STATS for the purpose of securing its obligations under this Agreement
     and the Security Documents.

     "Loan" means a sum of United States Dollars Fifteen Million only
     (US$15,000,000.00) loaned to Simmtech under this Agreement, which is to be
     repaid in full to STATS in accordance with the terms of this Agreement;

     "Loan Date" means January 2, 2004;

     "Loan Repayment Date" means the date when the Loan is to be repaid in full
     (subject to Clauses 5.2), being a date not later than January 2, 2009;

     "Potential Event of Default" means any event or circumstance which, if it
     continued after the giving of any notice, the expiry of any grace period,
     and/or the making of any determination by STATS (as the case may be),
     provided for in Clause 9, would become an Event of Default;

     "Repayment Dates" means the date falling one year after the Loan Date
     (i.e., (on January 2, 2005) and the first day of each subsequent three (3)
     month period thereafter during the Agreement Term, provided that any
     Repayment Date falling after January 2, 2009 shall be accelerated to fall
     on January 2, 2009;

     "Security Documents" means the YT Agreement, Factory Kun-Mortgage Agreement
     and the Share Pledge Agreement, each duly executed and signed by authorized
     signatories of Simmtech and STATS and in the form required by STATS;

     "Share Pledge Agreement" means the pledge agreement for the pledge of
     Shares dated as of the date hereof between the Major Shareholder (as
     pledgor) and STATS (as pledgee) whereby the Major Shareholder pledged the
     Shares to STATS to secure Simmtech's obligations under this Agreement and
     the Security Documents;

     "Shares" means the 2,400,000 common shares of Simmtech which are pledged to
     STATS under the Share Pledge Agreement;

     "Total Indebtedness" means the sum total of Simmtech's liabilities to STATS
     arising out of or in connection with the Loan including all sums agreed to
     be paid under this Agreement and the Security Documents, at any given time;
     and

     "YT Agreement" means the Yangdo Tambo agreement dated as of the date hereof
     between Simmtech (as transferor) and STATS (as transferee) whereby Simmtech
     will transfer title over certain property described therein to STATS for
     the purpose of securing its obligations under this Agreement and the
     Security Documents.

1.2  The headings to the Clauses hereof shall not be deemed to be a part thereof
     or be taken in consideration in the interpretation or construction thereof
     or of this Agreement.

                                       3
<PAGE>
2    LOAN

     Subject to Clause 3 below, STATS will provide the Loan to Simmtech on the
     Loan Date for the purposes and on the terms and conditions specified
     herein.

3.   CONDITIONS PRECEDENT

3.1  Subject to the terms and conditions herein contained, the obligation of
     STATS to provide the Loan to Simmtech under Clause 2 above is subject to
     the fulfilment, as determined by STATS, of the following conditions
     precedent on or 1 Banking Day prior to the Loan Date (unless otherwise
     waived by STATS in its absolute discretion):

     (a)  STATS has received the following documents and has found them
          satisfactory in both form and substance:

          (i)    a certified copy of the most recent Articles of Incorporation
                 of Simmtech;

          (ii)   a duly authenticated copy of the minutes of the board of
                 directors' meeting of Simmtech at which resolutions authorizing
                 the execution, delivery and performance of this Agreement, the
                 CTS Agreement and the Security Documents, including but not
                 limited to incurring the debt obligations hereunder and
                 providing the collateral as contemplated under the Security
                 Documents, and authorizing the person(s) who signed, or will
                 sign, this Agreement, the CTS Agreement and the YP Agreement or
                 all other documents in connection thereto on Simmtech's behalf
                 to do so, were adopted and any power of attorney executed in
                 connection therewith;

          (iii)  seal certificate of the Representative Director of Simmtech and
                 specimen signature(s) of the person(s) authorized to execute
                 this Agreement, the CTS Agreement, the YT Agreement and all
                 other documents in connection therewith;

          (iv)   the executed Security Documents duly signed or sealed by the
                 authorized person(s) on behalf of Simmtech;

          (v)    certified copies of each approval of any governmental
                 authorities of Korea and Singapore necessary or advisable in
                 connection with the execution, delivery and performance of this
                 Agreement and the CTS Agreement or the provision of the
                 collateral contemplated under the Security Documents, in form
                 and substance satisfactory to STATS and its legal counsel,
                 including but not limited to the relevant foreign exchange
                 reporting/approval requirements set forth in any applicable
                 laws and regulations;

          (vi)   evidence as may be requested by STATS and its legal counsel
                 that all obligations of Simmtech under the YT Agreement shall
                 be

                                       4
<PAGE>
                 satisfied prior to or simultaneously with the provision of the
                 Loan on the Loan Date, including but not limited to
                 satisfaction of relevant foreign exchange reporting/approval
                 requirement; (vii) evidence as may be requested by STATS and
                 its legal counsel that all obligations of the Major Shareholder
                 under the Share Pledge Agreement shall be satisfied prior to or
                 simultaneously with the provision of the Loan on the Loan Date,
                 including but not limited to (1) registration of STATS'
                 security interest over the Shares in Simmtech's shareholders'
                 registry, (2) delivery of the share certificates representing
                 the Shares to STATS or its agent and (3) satisfaction of
                 relevant foreign exchange reporting/approval requirements, as
                 provided in the Share Pledge Agreement;

          (viii) the executed CTS Agreement duly signed or sealed by the
                 authorized person(s) on behalf of Simmtech; and

          (ix)   such other documents that STATS may reasonably require;

     (b)  all acts, conditions and things required to be done and performed and
          to have happened precedent to the execution and delivery of this
          Agreement, the CTS Agreement and the Security Documents and to
          constitute the same legal, valid and binding obligations enforceable
          in accordance with their respective terms, shall have been done and
          performed and have happened in due and strict compliance with all
          applicable laws and regulations;

     (c)  there is no material adverse change in the business, properties,
          assets, operations, management or financial condition of Simmtech or
          any material adverse change in the property charged under the Security
          Documents or other conditions which in the opinion of STATS will
          materially and adversely affect the ability of Simmtech or the Major
          Shareholder to perform its respective obligations under this
          Agreement, the CTS Agreement and the Security Documents; and

     (d)  no Event of Default or Potential Event of Default has occurred.

3.2  Unless otherwise waived by STATS, in case of Simmtech's failure to comply
     with any of the foregoing conditions, STATS shall have no obligation to
     provide the Loan on the Loan Date.

4.   USE OF LOAN PROCEEDS

4.1  Subject to repayment of the Loan in full on the Repayment Dates falling
     due, Simmtech shall be entitled to use the Loan monies solely for the
     purposes of acquiring the Equipment listed in Appendix A and subject to
     STATS' prior written consent, such other purposes as Simmtech may require
     for use of the Loan monies for its ordinary course of business.

4.2  Simmtech hereby agrees and confirms that the Loan monies may be used solely
     for the purposes set out in Clause 4.1 and that nothing herein shall cause
     STATS to be construed to fall within the definition of a moneylender or to
     be presumed to be a

                                       5
<PAGE>
     moneylender under Sections 2 and 3 of the Moneylending Act of Singapore
     respectively.

4.3  Simmtech agrees between the Loan Date and December 31, 2004, to use the
     Loan (or necessary portion thereof) to purchase the Equipment and to
     immediately provide STATS with evidence satisfactory to STATS or its legal
     counsel of the purchase of the Equipment. Immediately after Simmtech takes
     legal title to the Equipment, Simmtech shall take all necessary action so
     that the Equipment will be subject to the YT Agreement, and shall cause (a)
     the placement of a plaque or sign on the Equipment stating STATS' title and
     interest thereon and (b) maintain adequate insurance over the Equipment, as
     provided in the YT Agreement.

5    REPAYMENT, PAYMENT AND INTEREST

5.1  Subject to Clauses 5.2, on each Repayment Date, Simmtech shall repay a
     portion of the Loan in the amount and currency of United States Dollars
     Eight Hundred and Eighty Two Thousand Three Hundred and Fifty Three only
     (US$882,353.00), provided that, the amount to be repaid on the Loan
     Repayment Date shall be the balance amount of the Loan outstanding and
     repayable as of such date.

5.2  If a Repayment Date (and/or January 2, 2009) does not fall on a Banking
     Day, such payment in respect of that Repayment Date shall be made on the
     immediately succeeding Banking Day.

5.3  On each date on which any sum is due from Simmtech, it shall make that sum
     available to STATS in United States Dollars and in immediately available
     and freely transferable funds by 11 a.m. on the day in question, by
     crediting such account of STATS with such bank as STATS shall have
     designated for the purpose.

5.4  STATS shall make the Loan to Simmtech by payment before close of business
     in Singapore on the Loan Date to such account with such bank as Simmtech
     may specify in writing.

5.5  Simmtech authorises STATS to apply (without prior notice) any sums from
     time to time due or owing from STATS to Simmtech howsoever arising in or
     towards satisfaction of any sum then due from Simmtech to STATS in respect
     of the Total Indebtedness. For that purpose, STATS is authorised to use all
     or any part of any such sums to buy such other currencies as may be
     necessary to effect such application. STATS shall not be obliged to
     exercise any of its rights under this Clause which shall be without
     prejudice and in addition to any right of set-off, lien or other right to
     which it is at any time otherwise entitled (whether by operation of law,
     contract or otherwise).

5.6  If the amount received by STATS from Simmtech on any date is less than the
     total sum remaining or becoming due under this Agreement and the Security
     Documents on that date, then regardless of any appropriation of all or part
     of that amount by Simmtech, STATS shall apply that amount in or towards
     payment of such part of the Total Indebtedness (whether principal,
     interest, fees or any other amounts due under this Agreement or the
     Security Documents) as it deems fit.

                                       6
<PAGE>
5.7  The parties hereto acknowledge Simmtech's intention to transfers all of its
     assets, equipment and facilities comprising its substrate manufacturing
     operations, including but not limited to all licences, contracts, rights
     and consents and employees relating to such operations ("Concerned
     Business"), by way of a spin-off or other methods permissible under Korean
     law and to form a new company ("NewCo") as a result of such transfer. STATS
     shall have the option, but not the obligation, to make an equity investment
     in NewCo up to 30 per cent. of the total number of shares of NewCo with the
     Loan repaid by Simmtech to STATS ("Option"). Simmtech shall complete the
     legal formation of NewCo as soon as practicable, but in any event, no less
     than three (3) months from the date STATS notifies Simmtech in writing of
     its election to exercise the Option. The specific terms of the investment
     in NewCo by STATS, including the timing of the investment, shall be agreed
     to by the parties separately, provided that, unless otherwise agreed and to
     the extent not prohibited by applicable law, the parties will for the
     purposes of STATS exercising its option to make an equity investment in
     NewCo, seek a valuation on an arm's length, willing seller and buyer basis,
     of the shares of the new company by one or more international investment
     banks or other persons of internationally recognized standing to be jointly
     or severally appointed by the parties.

6.   TAXES

6.1  All sums payable by Simmtech under this Agreement and the Security
     Documents shall be paid (a) free of any restriction or condition, (b) free
     and clear of and (except to the extent required by law) without any
     deduction or withholding on account of any tax and (c) without deduction or
     withholding (except to the extent required by law) on account of any other
     amount, whether by way of set-off or otherwise.

6.2  If (a) Simmtech or STATS is required by law to make any deduction or
     withholding on account of any such tax or other amount from any sum paid or
     payable by Simmtech to STATS under this Agreement and the Security
     Documents or (b) STATS (or any person on its behalf) is required by law to
     make any deduction or withholding from, or (except on account of tax on the
     overall net income of STATS) any payment on or calculated by reference to
     the amount of, any sum received or receivable by STATS under this Agreement
     and the Security Documents:

     (i)    Simmtech shall notify STATS of any such requirement or any change in
            any such requirement as soon as it becomes aware of it;

     (ii)   Simmtech shall pay any such tax or other amount before the date on
            which penalties attach thereto, such payment to be made (if the
            liability to pay is imposed on Simmtech) for its own account or (if
            that liability is imposed on STATS) on behalf of and in the name of
            STATS or (if STATS makes such payment) shall reimburse it on demand
            for the amount paid by it;

     (iii)  the sum payable by Simmtech in respect of which the relevant
            deduction, withholding or payment is required shall (except, in the
            case of any such payment, to the extent that its amount is not
            ascertainable when that sum is

                                       7
<PAGE>
            paid) be increased to the extent necessary to ensure that, after the
            making of that deduction, withholding or payment, STATS receives on
            the due date and retains (free from any liability in respect of any
            such deduction, withholding or payment) a net sum equal to what it
            would have received and so retained had no such deduction,
            withholding or payment been required or made; and

     (iv)   Simmtech shall, as soon as it is required by law, make any deduction
            or withholding, and immediately after the due date of payment of any
            tax or other amount which it is required by Clause 6.2(ii) above to
            pay, Simmtech shall deliver evidence satisfactory to STATS of such
            deduction, withholding or payment and (where remittance is required)
            of the remittance thereof to the relevant taxing or other authority.

6.3  Without prejudice to the survival of any other agreement of Simmtech
     hereunder, the agreements and obligations of Simmtech contained in Clauses
     6.1 and 6.2 above shall survive the payment in full of the Loan and under
     any instrument delivered hereunder.

7.   WARRANTIES AND REPRESENTATIONS

7.1  Simmtech hereby warrants and represents to STATS as follows:-

     (a)  that it is lawfully incorporated, validly existing and in good
          standing under the laws of the Republic of Korea;

     (b)  that it has the corporate power and authority to own assets and to
          carry on the business which it conducts and/or purports to conduct;

     (c)  that it has the corporate power to execute and perform this Agreement,
          the CTS Agreement and the YT Agreement;

     (d)  that the certified copies of the Articles of Incorporation and the
          board resolutions of Simmtech delivered to STATS are true and accurate
          copies of the corporate records of Simmtech;

     (e)  that the execution, delivery and performance of this Agreement, the
          CTS Agreement and the Security Documents (i) have been duly authorised
          by all requisite corporate action (where applicable) and (ii) do not
          and will not violate any provision of any agreement or other
          instrument to which Simmtech or the Major Shareholder is a party or
          which is binding on each of them or its or his assets, or result in
          the existence of, or oblige them to create, any security over those
          assets;

     (f)  there has been no material adverse change in the business, properties,
          assets, operations, management or financial condition of Simmtech
          since the lasted audited accounts;

     (g)  there are no actions, suits or proceedings pending or, to the
          knowledge of Simmtech, threatened against Simmtech or the Major
          Shareholder, at law or in equity before any court or competent body
          adjudicating such matters or before any government agency or
          administrative body (i) to restrain the

                                       8
<PAGE>
          entry into, exercise of Simmtech or the Major Shareholder's rights
          under and/or performance or enforcement of or compliance with its or
          his respective obligations under this Agreement, the CTS Agreement and
          the Security Documents to which it or he is a party; or (ii) which may
          result in any material adverse change in the business, operations,
          properties, assets or management, or in the condition, financial or
          otherwise of Simmtech;

     (h)  that no steps have been taken or are being taken nor have any legal
          proceedings been started or threatened for the dissolution, winding up
          or bankruptcy of Simmtech or for the bankruptcy of the Major
          Shareholder or similar procedures with respect to Simmtech or the
          Major Shareholder for the appointment of a receiver and/or manager or
          judicial manager, liquidator or trustee or any other person over it or
          him or the whole or any part of its or his assets;

     (i)  that this Agreement, the CTS Agreement and the Security Documents when
          executed are the legal, valid and binding obligations of Simmtech and
          the Major Shareholder enforceable in accordance with their respective
          terms;

     (j)  that all actions, conditions and things required to be taken,
          fulfilled and done (including the obtaining of any necessary consents)
          in order (i) to enable Simmtech and the Major Shareholder lawfully to
          enter into, exercise their respective rights and perform and comply
          with their respective obligations under this Agreement, the CTS
          Agreement and the Security Documents to which it or he is a party,
          (ii) to ensure that those obligations are legally binding and
          enforceable and (iii) to make this Agreement, the CTS Agreement and
          the Security Documents admissible in evidence in the courts of
          Singapore have been taken, fulfilled and done;

     (k)  that Simmtech's and the Major Shareholder's entry into, exercise of
          its or his respective rights and/or performance of or compliance with
          its or his respective obligations under this Agreement, the CTS
          Agreement and the Security Documents to which it or he is a party do
          not and will not violate (i) any law or regulations to which each is
          subject or (ii) any of the documents constituting Simmtech.;

     (l)  that Simmtech and the Major Shareholder have filed all tax returns
          which each of them is required by law to file and have paid all taxes,
          assessments, respective fees and other governmental charges assessed
          against each of them or upon any of its or his respective properties,
          assets or income;

     (m)  that no Event of Default or Potential Event of Default has occurred;

     (n)  that Simmtech or the Major Shareholder is not in default in the
          payment or performance of any of its or his respective obligations for
          Borrowed money or in respect of other liabilities which may have a
          material adverse effect on Simmtech or the Major Shareholder;

     (o)  that the audited financial statements of Simmtech and all other
          information which have previously been submitted by Simmtech to STATS
          are complete and correct and that the audited financial statements
          fairly represent the financial condition of Simmtech and the results
          of its

                                       9
<PAGE>
          operations for the period stated in accordance with generally accepted
          accounting principles applied on a consistent basis.

7.2  Each of the warranties and representations contained in the preceding
     sub-clause shall survive and continue to have full force and effect after
     the execution of this Agreement. Simmtech hereby warrants to STATS and that
     the above representations and warranties will be true and correct and fully
     observed as if repeated with reference to the then existing circumstances
     until the Total Indebtedness is fully paid.

8.   UNDERTAKING

8.1  Simmtech and the Major Shareholder hereby undertake and agree with STATS,
     for as long as the Loan has not been repaid in full, as follows:-

     (a)  that the Loan shall be used solely for the purpose and in the manner
          herein before stipulated and not for any other purpose or manner;

     (b)  that Simmtech will, and the Major Shareholder will cause Simmtech to,
          carry on and conduct its business and affairs with due diligence and
          efficiency in accordance with sound technical financial industrial and
          managerial standards and practices and pay all taxes as they fall due;

     (c)  that Simmtech will not, and the Major Shareholder will cause Simmtech
          not to, materially change the scope or nature of its business, whether
          by disposal, acquisition or otherwise;

     (d)  that Simmtech will, and the Major Shareholder will cause Simmtech to,
          keep the Equipment and the property charged under the YT Agreement in
          good and substantial repair and proper working condition to the
          satisfaction of STATS;

     (e)  that Simmtech shall, and the Major Shareholder shall cause Simmtech
          to, give to STATS such written authorization or directions and provide
          such facilities and access as STATS may require for the inspection of
          the Equipment;

     (f)  that Simmtech and the Major Shareholder will not (whether by a single
          transaction or a number of related or unrelated transactions and
          whether at the same time or over a period of time) sell, assign,
          transfer, pledge, mortgage, encumber or dispose of (or cause, attempt
          or purport to do any of the foregoing) any of the Equipment or Shares
          or other property charged under the Security Documents or of any part
          of its or his assets which, when aggregated with all other disposals
          by it or him required to be taken into account under this Clause
          8.1(f), is material in relation to its or his respective assets or the
          disposal of which (when so aggregated) may have a material adverse
          effect on it or him, (as may be relevant) nor do, or fail to do,
          anything whereby STATS' rights in respect of the Equipment or Shares
          or other property charged under the Security Documents or their
          respective value may be diminished, and shall notify STATS if Simmtech
          or the

                                       10
<PAGE>
          Major Shareholder becomes aware of any diminution in the rights
          attaching to, or the value of, the same or any circumstances whereby
          such rights or such value may be diminished;

     (g)  that Simmtech will not, and the Major Shareholder will cause Simmtech
          not to, amend or alter any provisions of its Articles of Incorporation
          relating to its borrowing powers, powers to guarantee and charge its
          assets and its principal business activities;

     (h)  that Simmtech will not, and the Major Shareholder will cause Simmtech
          not to, effect any form of reconstruction or amalgamation by way of a
          scheme of arrangement or otherwise and shall not approve, permit or
          suffer any change of ownership (whether legal or beneficial) or
          transfer of any part of its issued capital;

     (i)  that Simmtech will not, and the Major Shareholder will cause Simmtech
          not to, obtain any borrowings from other banks or financial
          institutions without the consent of STATS;

     (k)  that Simmtech will not, and the Major Shareholder will cause Simmtech
          not to, incur any liability by way of guarantee, assign its account
          receivables or take any action which may substantially and adversely
          affect its financial condition;

     (l)  that Simmtech shall, and the Major Shareholder shall cause Simmtech
          to, furnish and provide STATS with and permit STATS to obtain all such
          statements, information, explanation and data as STATS may require
          regarding its or his respective business, properties, assets,
          operations, management or financial condition or other condition or
          regarding the business, properties, assets, operations, management or
          financial condition or other condition of Simmtech, as permitted under
          relevant Korean laws and regulations;

     (q)  that Simmtech shall obtain all necessary licences and comply with all
          laws, regulations, rules and orders relating to the carrying on of its
          business;

     (r)  that Simmtech and the Major Shareholder shall at its own expense,
          execute, sign, perfect, and if required register every document, or do
          or procure the doing of any act or thing which in the opinion of STATS
          may be necessary or desirable for giving full effect to the terms and
          provisions of this Agreement, the CTS Agreement and the Security
          Documents and the benefit of the rights, powers and remedies conferred
          upon STATS under the same;

     (s)  that Simmtech will, and the Major Shareholder will cause Simmtech to,
          deliver to STATS from time to time on reasonable request by STATS a
          duly signed certificate of no Event of Default or Potential Event of
          Default;

     (t)  that Simmtech and the Major Shareholder will observe and comply with
          the terms and conditions of the Security Documents and all consents
          and approvals issued by relevant authorities in connection with the
          Loan;

                                       11
<PAGE>
     (u)  that Simmtech will, and the Major Shareholder will cause Simmtech to,
          notify STATS of the occurrence of any Event of Default and/or
          Potential Event of Default immediately upon becoming aware of it and
          thereupon, on request, deliver to STATS a certificate setting out
          details of any Event of Default and/or Potential Event of Default and
          the action taken or proposed to be taken to remedy it;

     (v)  that Simmtech will, and the Major Shareholder will cause Simmtech to,
          ensure that Simmtech's obligations under this Agreement will rank at
          all times at least pari passu with all its other existing and future
          unsubordinated indebtedness, obligations and liabilities actual or
          contingent from time to time (save for those which are preferred by
          the mandatory operation of law);

     (w)  if so and for so long as is required by STATS, Simmtech will, and the
          Major Shareholder will cause Simmtech to, at its own cost and expenses
          maintain or ensure the maintenance of a policy of insurance with a
          reputable insurance carrier over the Equipment and the property
          charged under the YT Agreement and will duly pay all premiums and
          other moneys necessary for effecting and keeping up such insurances
          and on demand produce to STATS such insurances and receipt for such
          payments. Such insurances shall:

          (i)     be for such sum or sums adequately covering STATS' interest in
                  the Equipment and the property charged under the YT Agreement;

          (ii)    be taken out in the name of Simmtech;

          (iii)   name STATS as loss payee or beneficiary;

          (iv)    acknowledge that Simmtech is the sole party liable to pay the
                  premium in respect thereof;

          (v)     provide for the insurers or underwriters to give to STATS at
                  least 30 days' prior notice of cancellation by reason of
                  non-payment of calls, premiums or otherwise and allow STATS an
                  opportunity of paying such calls or premiums which may be in
                  default;

          (vi)    provide that they may not be altered or amended without the
                  prior consent in writing of STATS;

          (vii)   acknowledge that all proceeds shall, irrespective of any other
                  provisions therein contained, be paid to STATS without
                  deduction, set-off or counterclaim in respect of any
                  outstanding premiums or calls on Simmtech;

          (viii)  contain a loss payee and non-cancellation clause, a notice of
                  assignment signed in accordance with the relevant policy rules
                  and such other terms and conditions as STATS may require; and

          (ix)    be in all other respects in form and substance acceptable to
                  STATS,

                                       12
<PAGE>
     and if Simmtech fails to comply with the provisions of this Clause 8.1(w),
     STATS may at its discretion (but without any obligation on its part to do
     so) have such insurance effected at the cost of Simmtech and all moneys
     paid by STATS in respect of such insurances shall be paid by Simmtech on
     demand;

8.2  Simmtech and the Major Shareholder hereby undertake and agree with STATS
     that it and the Major Shareholder shall not create or permit to arise or
     subsist, any mortgage, charge (whether fixed or floating), pledge, lien or
     other encumbrances whatsoever on the Equipment or the Shares or the
     property charged under the Security Documents or on any of Simmtech and the
     Major Shareholder's assets, properties and undertaking both present and
     future and wheresoever situate.

8.3  For as long as the Loan remains outstanding and has not be repaid in full,
     STATS shall have the right to nominate for election one non-standing member
     of the board of directors of Simmtech. Such director shall be compensated
     by Simmtech on substantially the same terms (including salaries, benefits,
     reimbursement of out-of-pocket expenses in connection with the foregoing,
     etc.), manner and policies as other members serving in similar capacities.

8.4  If STATS desires to exercise its nomination right pursuant to Section 8.3
     above, STATS shall submit a notice of nomination of such nominee (a
     "Nomination Notice") to Simmtech, and Simmtech and the Major Shareholder
     shall cause the election of such nominee at the general shareholders
     meeting of Simmtech, which shall be held by Simmtech in March 2004,
     including voting all of the Major Shareholder's common shares of Simmtech
     in favor of such applicable nominee.

9.   EVENTS OF DEFAULT

9.1  If any one or more of the following Events of Defaults shall occur, that is
     to say:

     (a)  if Simmtech or the Major Shareholder fails to repay any sums of money
          payable under this Agreement or any of the Security Documents (as the
          case may be) on the due date therefor or on demand if payable on
          demand (as the case may be) and such default shall not be rectified
          within three (3) Banking Days after the date of receipt by Simmtech or
          the Major Shareholder (as the case may be) of written notice of such
          default from STATS;

     (b)  if any representation or warranty made by Simmtech or the Major
          Shareholder in or in pursuance of this Agreement, the CTS Agreement or
          any of the Security Documents or in any certificate, statement or
          other document delivered by Simmtech or the Major Shareholder in
          connection with the execution and delivery hereof or in pursuance of
          this Agreement, the CTS Agreement or any of the Security Documents
          shall be or become incorrect or untrue in any respect;

     (c)  if Simmtech or the Major Shareholder defaults in the due performance
          of any undertaking, condition or obligation on its part to be
          performed and observed under this Agreement (other than the failure to
          pay any sum when due or on demand pursuant to Clause 9.1(a) above),
          the CTS Agreement or

                                       13
<PAGE>
          the Security Documents and such default (if capable of being rectified
          in STATS' opinion) shall not be rectified for a period of fourteen
          (14) Days after the date of receipt by Simmtech or the Major
          Shareholder (as the case may be) of written notice of such default
          from STATS;

     (d)  if any steps have been taken or are being taken or any legal
          proceedings have been started or threatened for the dissolution or
          winding up of Simmtech or for the bankruptcy of the Major Shareholder
          or for the appointment of a receiver and/or manager or judicial
          manager, liquidator or trustee or any other person over Simmtech or
          the Major Shareholder (as applicable) or the whole or any part of its
          or his respective assets;

     (e)  if a distress or execution is levied or enforced upon or sued out
          against any part of the property or assets of Simmtech or the Major
          Shareholder;

     (f)  if a judgement or order is made against Simmtech or the Major
          Shareholder and STATS is in that case of the opinion that the said
          judgement may materially affect Simmtech's or the Major Shareholder's
          ability to perform and observe its or his respective obligations under
          this Agreement, the CTS Agreement or any of the Security Documents;

     (g)  if Simmtech or the Major Shareholder becomes insolvent or is unable or
          deemed unable to pay its or his respective debts or admits in writing
          its or his inability to pay its or his respective debts as they fall
          due, stops, suspends or threatens to stop or suspend payment of its or
          his respective debts, begins negotiations or takes any proceeding or
          other step with a view to readjustment, rescheduling or deferral of
          all of its or his respective indebtedness (or of any part of its or
          his respective indebtedness which it or he will or might otherwise be
          unable to pay when due), or proposes or enters into reorganization,
          composition, corporate restructuring, compromise or arrangement with
          its or his creditors or proposes or makes a general assignment for the
          benefit of its creditors or a moratorium is agreed or declared in
          respect of or affecting its or his indebtedness;

     (h)  if Simmtech ceases or threatens to cease to carry on its respective
          business or any part thereof or a situation shall have arisen, which
          shall make it improbable that Simmtech or the Major Shareholder will
          be able to perform its or his respective obligations under this
          Agreement, the CTS Agreement and the Security Documents;

     (i)  if any other indebtedness in respect of Borrowed moneys of Simmtech or
          the Major Shareholder (i) is not paid when due or within the
          applicable grace period in any agreement relating to that indebtedness
          or (ii) becomes due and payable before its normal maturity by reason
          of a default or event of default howsoever described;

     (j)  if there are any actions, suits or proceedings pending or threatened
          against Simmtech or the Major Shareholder, at law or in equity before
          any court or competent body adjudicating such matters or before any
          government agency or administrative body (i) to restrain the entry
          into, exercise of Simmtech or the Major Shareholder's rights under
          and/or performance or enforcement of or compliance with its or his
          respective obligations under

                                       14
<PAGE>
          this Agreement, the CTS Agreement and the Security Documents; or (ii)
          which may result in any material adverse change in the business,
          operations, properties, assets or management, or in the condition,
          financial or otherwise of Simmtech or the Major Shareholder;

     (k)  if any present or future security on or over the assets of Simmtech or
          the Major Shareholder becomes enforceable;

     (l)  if it is or will become unlawful for Simmtech or the Major Shareholder
          to perform or comply with any one or more of its or his respective
          obligations under this Agreement, the CTS Agreement or any of the
          Security Documents;

     (m)  if there shall occur a material adverse change in the business,
          properties, assets, operations, management or financial position of
          Simmtech or the Major Shareholder;

     (n)  if anything shall be done or suffered or omitted to be done by
          Simmtech, or the Major Shareholder which in the opinion of STATS,
          imperils or may imperil the securities created by this Agreement or
          any of the Security Documents respectively;

     (o)  any agency of any state seizes, compulsorily acquires, expropriates or
          nationalises all or a material part of the assets or shares of
          Simmtech or the Major Shareholder and, in the opinion of STATS, such
          event has or could have a material adverse effect on Simmtech or the
          Major Shareholder;

     (p)  any change in the financial, economic or political conditions in Korea
          or Singapore which in the opinion of STATS renders it inadvisable or
          impracticable for STATS to continue to extend the Loan;

     (q)  any actions, condition or thing (including the obtaining of any
          necessary consent) of any time required to be taken, fulfilled or done
          for any of the purposes stated in Clause 7.1(j) is not taken,
          fulfilled or done or any such consent ceases to be in full force and
          effect or any condition in or relating to any such consent is not
          complied with; or

     (r)  if any event occurs which, under the laws of any applicable
          jurisdiction, has an analogous or equivalent effect to any of the
          events referred to in this Clause 9.1,

     then and in any of such event, STATS may, by notice in writing to Simmtech
     declare that an Event of Default has occurred and such declaration shall be
     deemed to take effect from the date of occurrence of such an Event of
     Default.

9.2  Upon the declaration by STATS that an Event of Default has occurred (by
     sending notification to Simmtech of such declaration pursuant to
     Clause 9.1):-

     (a)  the Total Indebtedness shall immediately become due and payable
          without any demand or notice of any kind by STATS to Simmtech; and

                                       15
<PAGE>
     (b)  STATS shall be entitled to exercise forthwith all or any rights,
          powers or remedies under this Agreement, the CTS Agreement, the
          Security Documents or any one or more of them.

     The rights hereunder are cumulative and may be exercised concurrently or in
     any order as STATS may in its absolute discretion think fit. Nothing in
     this Clause 9.2 shall limit any right, powers or remedies of STATS under
     this Agreement, the CTS Agreement and the Security Documents.

10.  INDEMNITIES

10.1 Simmtech and the Major Shareholder shall on demand indemnify STATS against
     any funding or other cost, loss, expense or liability sustained or incurred
     by it as a result of:

     (a)  the Loan not being made by reason of non-fulfilment of any of the
          conditions in Clause 3;

     (b)  the occurrence or continuance of any Event of Default or Potential
          Event of Default;

     (c)  the accelerated repayment of the Total Indebtedness under Clause
          9.2(a);

     (d)  the receipt or recovery by STATS of all or any part of any amount
          payable by Simmtech hereunder otherwise than on its due date; and

     (e)  any default in the payment of the Total Indebtedness or any portion
          thereof, or any other amounts payable under this Agreement or under
          the Security Documents, or on account of the non-observance of all or
          any of the terms, stipulations, agreements and provisions on the part
          of Simmtech or the Major Shareholder contained herein or under the CTS
          Agreement or the Security Documents, and such losses, damages and
          expenses shall include but are not limited to such amount as STATS
          shall certify (which shall be conclusive and binding upon Simmtech
          save for any manifest error).

10.2 Each of the above indemnities constitutes a separate and independent
     obligation from the other obligations in this Agreement, shall give rise to
     a separate and independent cause of action, shall apply irrespective of any
     indulgence granted by STATS and shall continue in full force and effect
     despite any judgment, order, claim or proof for a liquidated amount in
     respect of any sum due under this Agreement or any judgment or other order.
     No proof or evidence of any actual loss may be required.

11.  CALCULATIONS AND EVIDENCE

A certificate by STATS as to any sum payable to it under this Agreement and/or
the Security Documents shall be conclusive and binding on Simmtech save for
manifest error

                                       16
<PAGE>
12.  DISCLOSURE

The parties agree that neither will disclose confidential information relating
to the business and operations of the other party, the existence of this
Agreement, the CTS Agreement and the Security Documents, nor any of their
details or the existence of the relationship created by this Agreement, the CTS
Agreement and the Security Documents to any third party without the specific,
written consent of the other, provided that STATS may disclose to any government
or regulatory authority, the Major Shareholder, a potential assignee or
transferee or such other persons as STATS may think necessary or appropriate
such information about Simmtech or this Agreement, the CTS Agreement or the
Security Documents as STATS may think fit and Simmtech hereby consents to such
disclosure made now or hereafter.

13.  NOTICES

13.1 Except as otherwise expressly provided herein, any notice, request, demand
     or other communication to be given or served hereunder by one of the
     parties hereto to or on the others may be delivered at or sent by prepaid
     registered post or by facsimile to the address or addresses herein
     specified of the other party or parties and shall be deemed to be duly
     served:

     (a)  if it is delivered, at the time of delivery;

     (b)  if it is sent by prepaid registered post, one (1) day after posting
          thereof, or

     (c)  if it is sent by facsimile, immediately after transmission thereof, if
          the date of transmission is a working day, and if such a date is not a
          working day, then the notice by facsimile shall be deemed to be served
          on the immediately next succeeding working day.

     Except as otherwise expressly provided herein, all notices, requests,
     demands or other communications which are required by this Agreement to be
     in writing may be made by facsimile.

13.2 For the purpose of this Clause 13 each of the parties hereto shall from
     time to time notify the other party in writing of an address where such
     notice, request, demand or other communication as aforesaid can be given or
     served and such notification shall be effective only when it is actually
     received. In the absence of such notification, the notice, request, demand
     or other communication aforesaid may be given or served to the concerned
     party as stated below.

     To:          ST Assembly Test Services Ltd
                  5 Yishun Street 23
                  Singapore 768442
     Attention:   Director, Legal
     DID:         65 6824 1948
     Fax:         65 822 7837

     To:          SimmTech Co. Ltd. and/or Mr. Se-Ho Chun
                  70-5 Songjung-dong
                  Huengduk-ku

                                       17
<PAGE>
                  Choungju, Chungchongbuk-Do
                  Korea
     Attention:   Chief Marketing Officer
     DID:         82-43-269 9280
     Fax:         82-43-269 9048

14.  WAIVER NOT TO PREJUDICE RIGHT OF STATS

14.1 No neglect or forbearance of STATS to require and enforce payment of any
     moneys hereunder or the performance and observance of any undertaking,
     stipulation, term or condition herein contained, nor any time which may be
     given to Simmtech shall in any way prejudice or affect any of the rights,
     power or remedies of STATS at any time afterwards to act strictly in
     accordance with the provisions hereof. No such waiver of any such breach as
     aforesaid shall prejudice the rights of STATS in respect of any other or
     subsequent breach of any of the undertakings, stipulations, terms or
     conditions aforesaid. The rights and remedies provided in this Agreement,
     the CTS Agreement and the Security Documents are cumulative and not
     exclusive of any rights or remedies (whether provided by law or otherwise).

14.2 Any provision of this Agreement may be amended only if Simmtech and STATS
     so agrees in writing and any Event of Default or Potential Event of
     Default, provision or breach of any provision of this Agreement may be
     waived before or after it occurs only if STATS so agrees in writing. Any
     such waiver, and any consent by STATS under any provision of this
     Agreement, must be in writing and may be given subject to any conditions as
     STATS thinks fit. Any waiver or consent shall be effective only in the
     instance and for the purpose for which it is given.

15.  SEVERABILITY

     In case any provision in this Agreement shall be, or at any time shall
     become invalid, illegal or unenforceable in any respect under any law, such
     invalidity, illegality or unenforceability shall not in any way affect or
     impair the other provisions of this Agreement but this Agreement shall be
     construed as if such invalid or illegal or unenforceable provision
     contained herein did not from a part of this Agreement.

16.  GOVERNING LAW AND DISPUTE RESOLUTION

     This Agreement shall be governed by and construed in all respects in
     accordance with the laws of the Republic of Singapore.

     Any dispute arising out of or in connection with this Agreement, including
     any questions regarding its existence, validity or termination, shall be
     referred to and finally resolved by arbitration in Singapore in accordance
     with the Arbitration

                                       18
<PAGE>
     Rules of the Singapore International Arbitration Centre for the time being
     in force which rules are deemed to be incorporated by reference to this
     Clause 16.

17.  MISCELLANEOUS

17.1 Legal and other professional fees on a full indemnity basis, out-of-pocket
     expenses, charges and expenses of and in connection with this Agreement and
     the matters contemplated hereunder, including professional fees incurred
     for the purposes of STATS' making an equity investment in the new company,
     the CTS Agreement and the Security Documents incurred by either party,
     including STATS up to an amount not exceeding USD Twenty Thousand
     (USD20,000) ("Fee Cap") shall be paid by Simmtech upon demand by STATS,
     except that this Fee Cap shall not apply to expenses and charges that are
     incurred as a result of STATS' decision to not make the Loan on the Loan
     Date due to Simmtech's failure to fulfil its obligations under this
     Agreement.

17.2 Simmtech shall further pay all legal fees on a full indemnity basis and
     other costs and disbursements incurred in connection with or demanding and
     enforcing payment of moneys due under this Agreement and the Security
     Documents and otherwise howsoever in enforcing the performance of any other
     undertakings, stipulations, terms, conditions or provisions hereof and
     thereof.

17.3 This Agreement shall be binding upon the successors of Simmtech and shall
     enure to the benefit of STATS and its successors and assigns.

17.4 Simmtech shall have no right to assign or transfer any of its rights under
     this Agreement. STATS may assign all or any part of its rights or transfer
     all or any part of its obligations under this Agreement without the consent
     of Simmtech. Any such assignee or transferee shall be and be treated as a
     party for all purposes of this Agreement and shall be entitled to the full
     benefit of this Agreement to the same extent as if it were an original
     party in respect of the rights or obligations assigned or transferred to
     it.

17.5 This Agreement may be executed by each of the parties hereto in any number
     of counterparts, and by each party hereto on separate counterparts, each of
     which counterparts, when so executed and delivered, shall be deemed to be
     an original, but all such counterparts shall together constitute one and
     the same instrument.

18.  CONTRACTS (RIGHTS OF THIRD PARTIES) ACT (CAP. 53B)

     A person who is not a party to this Agreement shall have no right under the
     Contracts (Rights of Third Parties) Act (Cap. 53B) to enforce any of its
     terms.

                           SIGNATURE PAGE TO FOLLOW

                                       19
<PAGE>
IN WITNESS WHEREOF the parties hereto have executed this Agreement on the date
stated above.

ST ASSEMBLY TEST SERVICES LTD

By: /s/ Suh Tae Suk
   -----------------------
Name: Mr. Tan Lay Koon
Title: President and CEO

In the presence of: /s/ Juliana Ho
                    ---------------------------

SIMMTECH CO. LTD

By: /s/ Se-Ho Chun
   ----------------------
Name: Se-Ho Chun
Title: Representative Director

In the presence of: /s/ Young Goo Kim
                   ---------------------------

SE-HO CHUN

By: /s/ Se-Ho Chun
   ---------------------
Name: Se-Ho Chun

In the presence of: [/s/ Young Goo Kim]
                   ---------------------------

                                       20
<PAGE>
                                     ANNEX A

                            DESCRIPTION OF EQUIPMENT

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------------
                 EQUIPMENT                    UNIT PRICE (US$)        QUANTITY          PRICE (KUS$)
-----------------------------------------------------------------------------------------------------------
<S>                     <C>                   <C>                     <C>               <C>
DESMEAR+PTH+PNL LINE                           4,275,000                 1                 4,275
-----------------------------------------------------------------------------------------------------------
DEBURRING (CHEMICAL)                             380,000                 1                   380
-----------------------------------------------------------------------------------------------------------
EXPOSURE                                         598,500                 1                   599
-----------------------------------------------------------------------------------------------------------
SCAN                                             304,000                 3                   912
-----------------------------------------------------------------------------------------------------------
VRS                                              114,000                 5                   570
-----------------------------------------------------------------------------------------------------------
SEMI AUTO PRINTER                                 47,500                 2                    95
-----------------------------------------------------------------------------------------------------------
ROLL COATER WITH TUNNEL OVEN                     532,000                 1                   532
-----------------------------------------------------------------------------------------------------------
AUTO PRINTING SYSTEM                             182,000                 2                   364
-----------------------------------------------------------------------------------------------------------
TUNNEL OVEN FOR PRECURE                          228,000                 2                   456
-----------------------------------------------------------------------------------------------------------
AUTO EXPOSURE SYSTEM                             349,600                 1                   350
-----------------------------------------------------------------------------------------------------------
TUNNEL OVEN FOR FINAL CURE                       199,500                 1                   200
-----------------------------------------------------------------------------------------------------------
JET SCRUBBING FOR PRETREATMENT                   277,400                 1                   277
-----------------------------------------------------------------------------------------------------------
SOFT AU PLATING LINE                             748,885                 1                   749
-----------------------------------------------------------------------------------------------------------
BBT (FOR PBGA)                                   190,000                 1                   190
-----------------------------------------------------------------------------------------------------------
BBT (FOR CSP)                                    475,000                 1                   475
-----------------------------------------------------------------------------------------------------------
AVI                                              211,600                 3                   635
-----------------------------------------------------------------------------------------------------------
VRS                                               28,500                 3                    86
-----------------------------------------------------------------------------------------------------------
ROUTING RINSING                                  190,000                 1                   190
-----------------------------------------------------------------------------------------------------------
EXPOSURE SYSTEM                                   19,000                 1                    19
-----------------------------------------------------------------------------------------------------------
DEVELOP                                          152,000                 1                   152
-----------------------------------------------------------------------------------------------------------
ALKALINE ETCHING WITH R/STRIPPING                228,000                 1                   228
-----------------------------------------------------------------------------------------------------------
S/W                     GENESIS LICEN.            46,474                 5                   232
                        -----------------------------------------------------------------------------------
                        GENESIS GRAHP.            12,350                 8                    99
                        -----------------------------------------------------------------------------------
                        WORKSTATION               19,627                 13                  255
                        -----------------------------------------------------------------------------------
                        STELLAR                   95,000                 1                    95
-----------------------------------------------------------------------------------------------------------
MACHINE                 LASER PLOTTER            250,000                 3                   750
                        -----------------------------------------------------------------------------------
                        DEVELOPER                 30,970                 3                    93
                        -----------------------------------------------------------------------------------
                        FILM AOI                 213,300                 2                   427
-----------------------------------------------------------------------------------------------------------
HAST                                              45,108                 1                    45
-----------------------------------------------------------------------------------------------------------
IR REFLOW                                         42,505                 1                    43
-----------------------------------------------------------------------------------------------------------
   TC                                             73,733                 1                    74
-----------------------------------------------------------------------------------------------------------
MEASURING SCOPE                                   30,000                 1                    30
-----------------------------------------------------------------------------------------------------------
VACUUM LAMINATOR                                 562,500                 1                   563
-----------------------------------------------------------------------------------------------------------
YAG LASER                                        562,500                 1                   563
-----------------------------------------------------------------------------------------------------------
TOTAL                                                                                     15,000
-----------------------------------------------------------------------------------------------------------
</TABLE>

                                       21

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