Mr. Sarun Yansopananan Mr. Sarun Yansopananan, the former chief executive officer and chief financial officer, responsible for the operation of Hydrotek Public Company Limited (“HYDRO”), shall be

Mr. Sarun Yansopananan Mr. Sarun Yansopananan, the former chief executive officer and chief financial officer, responsible for the operation of Hydrotek Public Company Limited (“HYDRO”), shall be

Mr. Sarun Yansopananan Mr. Sarun Yansopananan, the former chief executive officer and chief financial officer, responsible for the operation of Hydrotek Public Company Limited (“HYDRO”), shall be

Mr. Sarun Yansopananan Mr. Sarun Yansopananan, the former chief executive officer and chief financial officer, responsible for the operation of Hydrotek Public Company Limited (“HYDRO”), shall be

Mr. Sarun Yansopananan Mr. Sarun Yansopananan, the former chief executive officer and chief financial officer, responsible for the operation of Hydrotek Public Company Limited (“HYDRO”), shall be

Mr. Sarun Yansopananan Mr. Sarun Yansopananan, the former chief executive officer and chief financial officer, responsible for the operation of Hydrotek Public Company Limited (“HYDRO”), shall be

Mr. Sarun Yansopananan Mr. Sarun Yansopananan, the former chief executive officer and chief financial officer, responsible for the operation of Hydrotek Public Company Limited (“HYDRO”), shall be

Mr. Sarun Yansopananan Mr. Sarun Yansopananan, the former chief executive officer and chief financial officer, responsible for the operation of Hydrotek Public Company Limited (“HYDRO”), shall be

Mr. Chamnan Chanapai, Chief executive officer for the operation of RAMKHAMHAENG Mr. Chamnan Chanapai, Chief executive officer for the operation of RAMKHAMHAENG HOSPITAL PUBLIC COMPANY LIMITED (“RAM

accordingly. Yours faithfully, For and on behalf of Diamond Building Products Public Company Limited (Mr. Satid Sudbuntad) Chief Executive Officer - 1 - DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED AND ITS