20 September 2005

Contract signing of the cultural art galleries

ST. 010/2005/0077 September 20th, 2005 Subject: Contract Signing of the Construction of the Cultural Art Galleries, BMA Attention: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited is pleased to inform the SET that on 20th September 2005, the Company signed contract of the Construction of the Cultural Art Galleries, BMA Project. The owner of the project is Bangkok Metropolitan Administration. The Company's scope of works includes the reinforced concrete building, 3 levels underground, 8 levels high roof-deck that has 18,400 square meters, electrical system, and related work. The construction period is 570 days. The value of Sino-Thai scope of works is 509,000,000.- 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