EXHIBIT 10.7

Revolving Line of Credit Agreement

Borrower:   DVS Korea Co., Ltd.
196 Kumkok Dong, Boon Dang Gu, Sung Nam City, Kyunggi Province
Mr. Song Sim, CEO

Lender:   Hana Bank

Principal (Limit on the Line of Credit): 4,000,000,000 Korean Won

Purpose of the Loan: International Trade Financing

This Revolving Line of Credit dated March 22, 2002, is made and executed
between DVS Korea Co., Ltd.("Borrower") and Hana Bank ("Lender") on the following terms and
conditions.

Borrower understands and agrees that in granting, renewing, or extending any loan, Lender is
relying upon Borrower's representation, warranties, and agreements as set forth in this Agreement;
the granting, renewing, or extending of any loan by lender at times shall be subject to Lender's
sole judgment and discretion; and all such loans shall be and remain subject of the terms and
conditions of this Agreement.

Term

This Agreement shall be effective as of March 23, 2002, and shall continue in full force and
effect until March 23, 2003.

Interest Rate

The annual interest rate on this Agreement is fixed rate of 6.25%. The annual interest rate
for this Agreement is computed on a 365 day basis; that is, by applying the ratio of the annual
interest rate over a year of 365 days, multiplied by the outstanding principal balance, multiplied
by the actual number of days the principal balance is outstanding.

Description Collateral

- Payment guarantee issued by Credit Guarantee Fund: maximum liability of 900,000,000 Korean
Won.
- Installment Savings Deposit of 1,200,000,000 Korean Won covering total credit provided by
Lender.

In addition, Borrower shall provide to Lender a blank draft. Lender may negotiate with the
Borrower's bank upon which the draft was drawn for full payment of unpaid principal and accrued
interest if Borrower fails to make payment in accordance with the terms of this Agreement.

Furthermore, Borrower grant Lender a security interest in all property at any time shipped under,
or pursuant to, or in connection with the Letter of Credit or anyway related thereto, or to the
drafts drawn thereunder, whether or not Borrower receives the documents covering such property or
release the same to Lender on trust receipt and also in and to all shipping documents, warehouse
receipts, policies or certificates of insurance and other documents or liability to Borrower at any
time existing under or with reference to the Letter of Credit of this agreement .

Late Charge and Interest After Default

Upon Borrower's failure to pay all amounts declared due pursuant to this section, including
failure to pay accrued interest, monthly payment, outstanding principal balance on final maturity
date, and excess draw on the account, Lender will adjust annual interest rate to 19% and applied to
past due, if any.

Payment

Borrower will pay this loan in full of all outstanding principal plus all accrued interest on
the maturity date. In addition, Borrower will pay regular monthly payments of all accrued unpaid
interest due as of each payment date determined at the time of advance.

Cessation of Advances

If Lender has made any commitment to make any Loan to Borrower under this Agreement, Lender
has right to reduce the Loan limit or shall have no obligation make Loan Advances or to disburse
Loan proceeds, if: (i) there occurs a material adverse change in financing community; or (ii) there
occurs a material adverse change in Borrower's financial condition, in the financial condition of
any Guarantor, or in the value of any Collateral securing any Loan. If Lender decides to reduce the
Loan limit and Borrower's outstanding loan exceeds such new limit, excess is due immediately upon
demand of Lender.

Advances

Advances under this Agreement shall be requested pursuant to the forms and procedures
prescribed by Lender.

Fees on Unused Portion of Line of Credit Limit

Lender will charge prevailing fees on unused portion of the line of credit limit provided to
Borrower.

Fees

Borrower shall pay Lender, on demand, commission and all charges and expenses paid or
incurred, earned by Lender in connection wherewith, and interest where chargeable.



Change in Terms Agreement

Hana Bank has made a Letter of Credit Commitment Agreement dated March 22,
2002, in the original amount of 4,000,000,000 Korean Won.

Date of Agreement:

March 21, 2003

Description of changes in Terms

Maturity date is changed from March 23, 2003 to March 23, 2004.



Change in Terms Agreement

Hana Bank has made a Letter of Credit Commitment Agreement dated March 22,
2002, in the original amount of 4,000,000,000 Korean Won.

Date of Agreement:

March 23, 2004

Description of changes in Terms

Maturity date is changed from March 23, 2004 to September 23, 2004.



Change in Terms Agreement

Hana Bank has made a Letter of Credit Commitment Agreement dated March 22,
2002, in the original amount of 4,000,000,000 Korean Won.

Date of Agreement:

September 23, 2004

Description of changes in Terms

Maturity date is changed from September 23, 2004 to March 23, 2005.

Decrease of credit amount from 4,000,000,000 Korean Won. to 2,650,000,000 Korean Won.

Collateral is changed as bellows.

Payment guarantee issued by Credit Guarantee Fund: maximum liability of 900,000,000 Korean Won.

Installment Savings Deposit of 1,750,000,000 Korean Won.

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