SIGNED CONTRACT

Our Ref : ST/010/2003/0004 January 22, 2003 Subject: Signed contract Attention: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited (STECON) is pleased to inform the SET that on January 20, 2003 the Company signed a construction contract with Bumrungrad Hospital Public Company Limited to build a new B.H. Parking Building. The details of the contract are as follows; Scope of Work: Architectural and structural works of B.H. Parking Building Contract Value: 224,729,153 Baht (VAT included) Period of Work: 550 days Please be advised and disclose to investors and public. Yours sincerely (Ms. Ayuporn Wongkomet) Assistant Vice President Executive Office Investor Relations IR@stecon.co.th