... product 2)Non-flammable B1 3)Heat retaining power 4)Sound insulating 5)Non-dust, Easy clear Regular Gypsum board1200*3600 ... ,12.5,13,15,15.9,18,20.5)FeaturesMoistureproof,Sound-Absorbing,Heat-insulation,Smokeproof,easy to be knocked in,easy installation.6 ...