... ,deadening... Specifications high strength, freeze-proof, water-proof, fiber-proof, sound-proof and non- deformation. Used as ceiling ... 6mmMaterials: Tobermorite, cement, Quartz sand, reinforced fiberFire-proof rate: A-class incombustible (GB8624-1997)Incombustibility: 180 ... Israel, India, Pakistan, Vietnam, Thailand, Indonesia, Singapore, Malaysia, Korea, USA, or European countries and etc ...