Contract Signing of the New Terminal Chiang Mai Airport

ST. 010/2005/0071 July 18th, 2005 Subject: Contract Signing of the Construction of the New Airport International Terminal, Chiang Mai Airport Attention:The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited is pleased to inform the SET that on 15th July 2005, the Company signed contract of the Construction of the New Airport International Terminal, Chiang Mai Airport Project. The owner of the project is Airports of Thailand Public Company Limited. The Company's scope of works includes 2 levels of the reinforced concrete building and a roof-deck that will be placed the engine, which will be 20,000 square meters. The construction period is 300 days. The value of Sino-Thai scope of works is 488,514,391.15 Baht (Include VAT.). 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