Fire material waterproof, moisture-proof insulation material, acoustic insulation materials, sound-absorbing material. ... maintenance, which have high strength,anti-corrosion,water-resist,fire-proof,sound insulation, heat insulation,no distortion and radiation and ... cm33.Color:white,gray,light yellow4.Egde:square, beveled5.Fire-proof Features:incombustible A-class(GB8624-1997)6.Incombustibility: 4hours ...