Signing Purplr Line Project

ST. 010/2010/0001 January 20th, 2010 Subject: Signing contract Attention: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited is pleased to inform the SET that the company has signed a new contract. The details of the project are as follows: Project Name: MRT Purple Line Project, Bang Yai - Ratburana, Bang Yai - Bang Sue Section Contract 2: Elevated Structure (West) (Contract signed on January 20th,2010) Project owner: Mass Rapid Transit Authority of Thailand (MRTA) Contract value: 13,100,000,000.- Baht (Exclude VAT) Scope of work: 11km Elevated Structure including with 8 Stations Construction period:1,350 days (from Commencement Date) It is therefore informed for your acknowledgement and dissemination to the public and other investors. Yours sincerely, Mr. Woraphant Chontong SEVP. Financial and Administration Division Company Secretary Office Telephone: 0 2610 4900 ext. 212, 305, 274 Facsimile: 0 2259 4427