Signed LOI of SBCC Power Plant Block III Project

ST 010/2005/0089 November 28th, 2005 Subject: Signed the Letter of Intent of the work for South Bangkok Combined Cycle Power Plant Block III Project Attention: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited is pleased to inform the SET that the Consortium of Mitsubishi Corporation and Sino-Thai Engineering and Construction Public Company Limited has signed the Letter of Intent of the work for South Bangkok Combined Cycle Power Plant Block III project with EGAT Public Company Limited as follow: Project name : The construction of South Bangkok Combined Cycle Power Plant Block III Project Project owner : EGAT Public Company Limited Total contract value : USD 241,158,000 + THB 3,140,050,000 Contract value for STEC's portion : 2,360,000,000 Baht (Exclude VAT) Scope of work for STEC : civil construction, erection, and related works Construction period : 36 months from October 25th, 2005 It is therefore informed for your acknowledgement and dissemination to the public and other investors. Yours sincerely Mr. Woraphant Chontong SEVP. Financial & Administration Division