SET Announcements

=Translation= Ref: CK-06-0000-PO-L-0080 March 20, 2006 Subject Signing the Construction Contract Attention President The Stock Exchange of Thailand Since CH.Karnchang Public Company Limited has signed the Construction Contract for drainage way and roads including the component building, part one; the drainage way project in the area of Suvarnabhumi Airport, Samutprakarn Province, executing with Royal Irrigation Department. This transaction is a normal and in ordinary course of our business. The detail of the contract is as follows: Signing Date: March 20, 2006 The Value of Contract: Baht 1,449,500,000 (One Thousand Four Hundred Forty Nine Million Five Hundred Thousand Baht) VAT included Period: approximately 780 days For your information. Sincerely yours, =signature= (Mr. Anukool Tuntimas) Executive Vice President Human Resource and General Administration