Invitation letter for shareholders to propose agenda of AGM

ST.010/2008/0046 November 14th, 2008 Subject: The invitation for Shareholders to propose an agenda of 2009 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 2009 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 2009 in accordance with the rules and regulations of the company RE: the shareholders can propose an agenda of Annual General Meeting of Shareholders in advance and propose a qualified person to be elected as a director of the company. The company has announced the said criteria on the company's website at www.stecon.co.th from now until December 30th, 2008. 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 Corporate Secretary Office Tel: +662 610 4900 ext. 212, 274 Fax: +662 259 4427