... ceiling board. High quality gypsum board:nateral material,sound insulation,heat-insulation,light-weight, high-strength, ... accordance with Chinese Standard GB8624-19977) heat retaining power8) sound insulating, fireproof9) not deforming, not cracking, keeping ... (20FCL)2400*1200*9970(20FCL)2400*1200*9.5*950(20FCL)2400*1200*12750(20FCL)2430 ... 121050(40 FCL)3000*1200*9.5850(40FCL) paper faced gypsum board