We S.Siriseang Company Limited located on 140 Vibhavadeerangsit Rd., Dindaeng, Dindaeng Bangkok 10400 Thailand Tel. 02-691-9777 by Mr. Somchai Sivaleepunth hereby authorize and appoint Mr. Suphachai Wongsao to be lawful and legal attorney for the purpose concerning with submission of our Bid including but not limited to signing and submission of all application, bids and other documents and writings, participate in bidders and other conferences and providing information / responses, representing us in all matters before signing and execution of all contracts and undertakings consequent to acceptance of our bid and generally dealing in all matters in connection with or relating to or arising out of our bid. What has been done by Mr. Suphachai Wongsao will remain in full force and effect as it has been done by us.