Propose an agenda of AGM 2010

ST.010/2009/0047 November 11th, 2009 Subject: The invitation for Shareholders to propose an agenda of 2010 Annual General Meeting of Shareholders in advance and to propose a qualified person to be elected as a director of the company Attention: The President The Stock Exchange of Thailand The Board of Directors of Sino-Thai Engineering and Construction Public Company Limited is concerned about the good corporate governance, and it is therefore, considered to entitle the company's shareholders to propose an agenda of 2010 Annual General Meeting of Shareholders and to propose a qualified person to be elected as a director of the company in advance. The company has set up the criteria for the shareholders to propose such matters for the Annual General Meeting of Shareholders in 2010 in accordance with the rules and regulations of the company RE: the shareholders can propose an agenda of Annual General Meeting of Shareholders and propose a qualified person to be elected as a director of the company in advance. The company has announced the said criteria on the company's website at www.stecon.co.th from now until December 30th, 2009. 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 Tel. 0 2610 4900 ext 274, 212, 305 Fax. 0 2259 4427