ข่าวแจ้งตลาดหลักทรัพย์

Ref: CK-05-0000-AFS-L-0144 May 13th, 2005 Attention : President The Stock Exchange of Thailand Subject : Declaration of Operating Result of the three-month Ended March 31, 2005 Compared with the three-month Ended March 31, 2004 CH.Karnchang Public Company Limited, Subsidiaries and joint ventures have the operation result of the three-month period, as of March 31, 2005 reached the profit increased to 453.6% compared with the same fiscal year of 2004 due to the following factors : 1. In the first Quarter of this year, the company has the increased profit from the exchange rate, compared with the same quarter of last year. 2. The company has increased income from the construction work in the First Quarter of the year 2005 when compared with the same quarter of last year. Since the new projects singed in the second of the Quarter of 2004 such as BMA Wastewater Tunnel Project (Makkasan to Chao Phraya River) etc, and the previous projects, such as SBIA Hydrant Network Projects and SBIA Aviation Fuel Depot Project at Suvarnabhumi Airport has been the progress of construction. For your consideration. Sincerely yours, (Mr.Plew Trivisvavet) (Mr.Narong Sangsuriya) Directors