Piyasombat Property Co .,Ltd. / Piyasombat Asset Co.,Ltd. / Piyasombat Land Co.,Ltd. / Piyasombat Estate Co.,Ltd. / PSP Land Resort Co.,Ltd. / Piyasombat Residence Co.,Ltd. / Piyasombat Mansion Co.,Ltd. / Piyasombat Development Co.,Ltd. / Hotel Silom Co.,Ltd. are founded by Piyasombatkul family and are subsidiaries of Metro Ply Group, one of the best wood-based panel manufacturers in Thailland with an achievement of ISO 9002 by BVQI. (www.metroply.com)