Signed contracts totaling 3.4 Bn.Bht.

Our Ref : ST/010/2002/0026 September 29, 2003 Subject: Signed contracts totaling 3.4 billion Baht Attention: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited (STECON) is pleased to inform the SET that in the third quarter of 2003 the Company signed 5 contracts with total contract value of 3,394 Million Baht. The details of the contracts are as follows: 1) Construction of Export Exhibition, and Decoration - Project Owner: Ministry of Commerce, Department of Export Promotion - Total Contract Value : Baht 255,000,000 (VAT Included) - Construction Period : 365 days 2) Construction of "Master Pieces" housing development project - Project Owner: Property Perfect Public Company Limited. - Total Contract Value : Baht 217,358,833.50 (VAT Included) - Construction Period : 240 days 3) Construction of Krabi Airport - Project Owner: Department of Aviation - Total Contract Value : Baht 557,232,633 (VAT Included) - Construction Period : 630 days 4) Construction S1 Contract No. 2 - Project Owner: Expressway and Rapid Transit Authority of Thailand - Total Contract Value : Baht 1,070,000,000 (VAT Included) - Construction Period : 500 days 5) Construction of Aircraft Maintenance Center (Hangar) - Project Owner: Thai Airways International PLC. - Total Contract Value : Baht 1,295,000,000 (VAT Included) - Construction Period : 500 days Please be advised and disclose to investors and public. Yours sincerely (Ms. Ayuporn Wongkomet) Assistant Vice President