AUDIT COMMITTEE REPORT ON MEMBERS AND SCOPE OF DUTIES

Audit Committee Report on Members and Scope of Duties The Annual General Shareholders Meeting No. 6/1999 of Sino-Thai Engineering & Construction Public Company Limited held on April 9, 1999 passed resolutions concerning the appointment of a company Audit Committee. The members of the committee include : 1. Audit Committee Members Mr.Chamni JanChai Chairman Police Major General JateMongkolhutthi Member Dr.ChaiyaphonHorrungruangMember Mr.WoraphantChontong Secretary 2. A listed company s Audit Committee, which represents the board of directors, is responsible for the following duties stated on the charter and must report to the board of directors on : 1. Oversee a listed company s financial information, in which the financial statement must be correct, sufficient, and credible. 2. Ensure a listed company has adequate and effective internal control systems. 3. Select and approve the company s auditor as well as including the annual auditing fee. 4. Ensure a listed company follows all the relevant regulations and laws. 5. Ensure a listed company does not engage in any activities that may lead to a conflict of interest. 6. Present at the fiscal year end a report from the audit committee separated from the report from the Board of Directors, and disclose in the company s annual report 7. Agree and accept in appointing, withdrawing, transferring or terminating the employment of internal audit manager. 8. Agree and accept in approving the budgeting and manpower of internal audit section. 9. Commission and review the findings of investigation into matters where there is and infringement of any regulations and laws which have or are likely to has a material impact on the company s operating results and financial position. 10. Handle any assignments subject to the laws or the board of director s assignment, in regard to the authorization to call the management for attending or submitting any concerned documents for the audit committee s decision. 3. The period of service of members is as follows : Audit Committee Members : The period of service is the same as Board of Directors (Including the appointment and the withdrawal of audit committee members) We hereby confirm these Audit Committee members have the qualifications required by the Stock Exchange of Thailand. Authorized Director ( Dr.Udomsak Chakreyavanich ) Authorized Director (Mr.Vallop Rungkijvorasathien)