Exhibit 4(aa)

                              COMMISSION AGREEMENT


PARTIES:                   GARDEX INTERNATIONAL LIMITED ("GARDEX")
                           (a British Virgin Islands Corporation)

                           ASE Electronics (M) Sdn. Bhd. ("ASEM")
                           (a Malaysia Corporation)

DATE:    July 1, 2000

                                   AGREEMENT

1.   Services to be rendered. ASEM hereby retains GARDEX to provide the sales
     services to ASEM as a Sales Agency with the following terms.

     To be non-exclusive world-wide sales agent for all present and future
     products and services to be specified by ASEM in writing with the
     following authority:

(a)  Identify customers for ASEM products and services;

(b)  Within such limitations relating to price, delivery and other key terms as
     ASEM may from time to time specify in writing, and subject to acceptance
     by ASEM (by telex or otherwise) negotiate sales contracts as ASEM's agent;

(c)  Monitor contract performance by the customer, including acceptance of
     delivery, payment, etc.

2.   Compensation to GARDEX. For services hereundered, ASEM shall pay monthly
     compensation to GARDEX in respect of net export sales (outside of
     Malaysia). The compensation amount is 0.7% of the total monthly export
     sales.

     The above scheme of compensation payment is applicable from July 1, 2000
     to June 30, 2001. Compensation payment thereafter is subject to further
     negotiation on a yearly basis between ASEM and GARDEX.

     All payments to GARDEX shall be in US dollars. Currency conversions, where
     necessary, shall be based on prevailing free-market rates of the time the
     payment is earned (not at the time of payment) as quoted in the Wall
     Street Journal or other authoritative source.

3.   Term of Agreement. This agreement is effective from July 1, 2000 and shall
     expire on June 30, 2001 unless earlier terminated by (i) mutual agreement,
     or (ii) ASEM on at least 30 days' prior written notice with or without
     cause. Neither expiration nor termination of this Agreement shall
     terminate the obligation of ASEM to pay GARDEX for services rendered with
     respect to sales following such date that result from orders received
     prior to such date.

4.   Representative and Covenants.

(a)  GARDEX agree to use its best efforts to perform its obligations hereunder
     and to give priority to ASEM over all other customers of GARDEX in terms
     of management time, and efforts. GARDEX will not enter into any management
     consulting, sales, agency or similar relationship, nor engage in
     activities, that would result in a conflict with GARDEX's duties under
     this Agreement.

(b)  Each party will provide to the other on a regular basis such documentation
     as may reasonably be required to enable the other party to be assured of
     compliance with this Agreement, and shall permit the other party to
     inspect its books of account and other records at such reasonable times as
     the other party may request.


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(c)  All confidential information received or learned by GARDEX relating to
     ASEM's business and products shall be kept in confidence by GARDEX and
     neither used by GARDEX nor disclosed to any other person for any purpose
     outside this Agreement.

5.   Governing Law and Jurisdiction. This Agreement shall be governed and
     construed under the laws of Republic of China unless the parties agree in
     writing to voluntary arbitration. The Courts in the Republic of China
     shall have exclusive jurisdiction to hear and decide any case or
     controversy arising out of this Agreement.

Each party consents to in person jurisdiction over it by such courts and to
service of process by registered mail sent to its principal business address.


                                           ASE Electronics (M) Sdn. Bhd.


                                           By: /s/ David Hsiang
                                              --------------------------------


                                           GARDEX INTERNATIONAL LIMITED


                                           By /s/ Philip Nicholls
                                              --------------------------------