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                                                                    EXHIBIT 10.2


                              COOPERATION CONTRACT

      THIS COOPERATION CONTRACT has been entered by Taiwan Secom Co., Ltd.
(hereinafter called Party A), Yonin Technology Co., Ltd. (hereinafter called
Party B) and Reng Bang Information Co., Ltd. (hereinafter called Party C).

      NOW, THEREFORE, in consideration of the cooperation obligations hereunder,
the three parties hereto agree as follows:

Article 1   The items that are required to be quoted to the construction company
            (or the proprietor) in the beginning by the three parties consist
            of:

            (1)   Security system (Secom)

            (2)   Access automatic system (Secom, except Yonin still in charge
                  of random locks)

            (3)   Monitoring system (Secom)

            (4)   BA (Yonin)

            (5)   Network (Reng Bang)

            (6)   Other related products

Article 2   The security, door access and monitoring systems specified in
            Article 1 shall be replaced with other products due to changes on
            the market or requirements made by the customers during the initial
            stage of quotations and an agreement has to be reached among the
            three parties.

Article 3   Any of the three parties shall provide proper educational training
            if required by any of the other two parties. All accrued expenses
            resulted during the period of training should be afforded by the
            party that is responsible to implement such training.

Article 4   Methods of listing doubtful accounts (or loss):

            (1)   The total amount of a concluded transaction among the three
                  parties and the construction company (or the proprietor) minus
                  the accounts received leaves doubtful accounts (or loss).

            (2)   The amount of doubtful accounts to be listed is resulted from
                  the accounts receivable multiplying the rates of concluded
                  amounts of the three parties (i.e. the average rate of loss
                  that each party should be responsible)

Article 5   Payment

            (1)   Payment of the construction company shall be determined on a
                  case basis.

            (2)   Payment of the three parties shall be decided in accordance
                  with the method of payment made by the construction


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                  company and another agreement shall be made therefrom.

Article 6   Maintenance And Service: Maintenance and service of the material
            shall be decided on a case basis and the three parties shall come to
            an agreement as to the method of performing such maintenance or
            service. In addition, the maintenance and service contract shall be
            incorporated into the subcontract as an appendix as a reference of
            adherence.

Article 7   Structure of communications: Each of the three parties shall provide
            its own system and structure of communications (including names and
            phone numbers of sales, engineering and technical personnel as well
            as the people in charge of the branches in central and southern
            Taiwan). In case of any changes of such personnel, the other two
            parties shall be notified immediately so as to facilitate smooth
            operation of projects. If such notice is not given and any of the
            other two parties suffers loss, the defaulting party shall be liable
            to any of the claims resulted thereof.

Article 8   During the valid term of this contract, Party A agrees not to sign
            any of the contract or agreement that is similar to this contract or
            establish any relationship of strategic alliance with any third
            party and Party B and Party C agree not to do the same thing
            aforementioned with any other securities companies. If any party
            violates such regulation, an amount of NT$2 million shall be
            immediately paid to the faultless party (parties) as a penalty fine
            and the violating party should also compensate for any loss resulted
            from such violation. The same rule applies to terminating the
            contract before it expires.

Article 9   Party B and Party C shall not sell, rent or lease the products of
            Party A in any forms in Taiwan without a prior consent from Party A.
            However, any of the three parties shall sell the products in its own
            brand in the areas out of Taiwan.

Article 10  The term of this cooperation contract is valid for three (3) years
            and shall be discussed and reviewed once every year. All quotations
            shall be kept strictly confidential by all three parties. Any of the
            parties or its (their) affiliate companies with an intent of making
            the other party (parties) suffer from loss by disclosing such
            information to any third party on purpose shall be liable to pay the
            penalty fine specified in the previous article and compensate for
            any loss resulted from such disclosure. The same rule applies to
            terminating the contract before it expires.

Article 11  Any confidential information or intelligent property rights related
            to this contract shall belong to the three parties jointly.

Article 12  Party A may terminate this contract any time and claims for


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            loss to Party B or Party C when any of the latter parties
            reorganizes, winds up, merges, liquidates or terminates operation
            and is default in performance of the obligations specified in this
            contract.

Article 13  As for any other items unspecified in this contract, the three
            parties may make another agreement upon consensus.

Article 14  Any dispute which may arise in connection with this contract shall
            be settled by arbitration of the local court in Taipei, Taiwan, the
            Republic of China.

Article 15  This original contract is in six (6) copies and each party shall
            retain two (2) copies.

Contractors:

Party A:

            Name: Taiwan Secom Co., Ltd.
            Person in Charge: Hsu Ming-De

Party B:

            Name: Yu Ning Technology Co., Ltd.
            Person in Charge: Lin Dong-Zhu

Party C:

            Name: Reng Bang Information Co., Ltd.
            Person in Charge: Peng Li-Fang

Date: July 1, 2000