(Translation) Subject: Signed Sales Contracts To: President of the Stock Exchange of Thailand Tirathai Public Company Limited would like to inform that the Company signed 2 sales contracts, with Metropolitan Electricity Authority and Provincial Electricity Authority, in the month of April and May 2006. Details of them are as followed, 1. Sales contract to supply 6 units of Electrical Transformers 36/48/60 MVA, 115/24 kV was signed with Metropolitan Electricity Authority. Amount: 151,299,000 Baht Signing Date: April 10, 2006 Delivery time: 1st shipment, 2 units within October 7, 2006 2nd shipment, 2 units within November 6, 2006 3rd shipment, 2 units within April 5, 2007 2. Sales contract to supply 285 units of Electrical Transformers 250 kVA, 22,000-400/230 V was signed with Provincial Electricity Authority. Amount: 58,681,500 Baht Signing Date: May 2, 2006 Delivery time: 1st shipment, 200 units within 2 months 2nd shipment, 85 units within 3 months Please be informed accordingly. Your Faithfully, (Mr. Upakrom Thaweephoke) Deputy Managing Director (Finance and Marketing)