Constructions commencement totalling 3.5 Billion Baht

ST 010/2004/0071 November 5, 2004 Subject: Constructions commencement totaling 3.5 Billion Baht Attention: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited (STECON) is pleased to inform the SET that during the late of third quarter and the beginning of fourth quarter of 2004, the Company has started construction of 2 significant projects with total contract value of 3,493 Million Baht. The details of the contracts are as follows: 1. The Construction of Bangkok Metropolitan Administration 2 (Din-Dang district) Phase 3 with total contract value of 2,267,289,719.63 Baht. (VAT Excluded). The construction period is 1,100 days. 2. The Construction of the Interchange in 4 locations with total contract value of 1,226,181,149.53 Baht. (VAT Excluded). The construction periods range between 240 - 300 days. The details of such Interchanges are as follows: 2.1 Ekkachai Rd. - Bang Bon Rd. - Bangkhuntien Rd. 2.2 Suksawat Rd. - Rama II Rd. 2.3 Chalongkrung Rd. - Suwintawong Rd. 2.4 Bangkhuntien Rd. - Rama II Rd. Bangkok Metropolitan Administration is the project owner of both significant projects. It is therefore informed for your acknowledgement and dissemination to the public and other investors. Yours sincerely Mr. Woraphant Chontong SVP. Financial and Accounting Division