SIGNED CONTRACT IN NOVEMBER

Our Ref : ST/2002/0506 November 27, 2002 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 in the month of November 2002 the Company signed a construction contract and the details of the contract are as follows: Project: Additional work for the construction of Thai Olefins plant expansion in the area of Civil works, installation and erection of piping system and steel structure. Project Owner: Chiyoda Corporation / Thai Olefins Company Limited Signing Date: 15 November 2002 Additional Contract Value: Baht 158,841,796 (VAT Included) Total Contract Value: Baht 1,248,235,546 (VAT included) Please be advised and disclose to investors and public. Yours sincerely (Ms. Ayuporn Wongkomet) Assistant Vice President Executive Office Investor Relation IR@stecon.co.th