Contract Siging of BTS Silom route project

ST 010/2005/0086 November 14th, 2005 Subject: Contract Signing of the construction of BTS Silom route extension Project Attention: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited is pleased to inform the SET that on 11th November 2005, the Company, by the name of Sino-Thai-A.S. Joint Venture has signed contract as follow: Project name : The construction of BTS Silom route extension Project Project owner : Department of Traffic and Transportations Total contract value : 1,033,877,909 Baht (Include VAT) Construction period : 300 days Scope of work : Installation the primary structure of BTS Silom route and related works Remark: Sino-Thai Engineering & Construction Plc. has 75% stake in the Joint Venture. It is therefore informed for your acknowledgement and dissemination to the public and other investors. Yours sincerely Mr. Woraphant Chontong SEVP. Financial & Administration Division