The amendment of the issuance of short term Bill of Exchange

ST.010/2005/0037 March 23rd, 2005 Subject Report on the amendment of the issuance of short term Bill of Exchange ATTN President, Stock Exchange of Thailand Ref. The letter number ST010/2005/0034 : Report on the Annual General Meeting date and the approval of the issuance of short term Bill of Exchange dated March 10th, 2005. Whereas, Sino-Thai Engineering and Construction Public Company Limited reported the resolutions of the Board of Directors Meeting No. 2/2005 dated March 10th, 2005 about the approval of the issuance of short term Bill of Exchange at the amount of not exceed Baht 1,000,000,000 (One Billion Baht) via Private Placement according to the notification of the Securities and Exchange Commission. The Company would like to report on the amendment of the issuance of short term Bill of Exchange which stated above from "via Private Placement" to "to general investors" according to the notification of the Securities and Exchange Commission. It is therefore, informed for your acknowledgment and dissemination to the public and other investors. Sincerely yours, Mr. Vallop Rungkijvorasathein President