Signing contract of the construction medical dorm @ Nong Jok

ST 010/2005/0088 November 18th, 2005 Subject: Report on signing the contract of the construction of medical dormitory at Nong Jok Hospital Project Attention: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited is pleased to inform the SET that on 16th November 2005, the company has signed contract as follow: Project name : The construction of medical dormitory at Nong Jok Hospital Project Project owner : Bangkok Metropolitan Administration Total contract value : 195,137,000 Baht (Include VAT) Approximately Construction period : 480 days Scope of work : Site preparation, structure, electrical system and related works It is therefore informed for your acknowledgement and dissemination to the public and other investors. Yours sincerely Mr. Woraphant Chontong SEVP. Financial & Administration Division