... Grade A fireproof 2) 100% no asbestos 3) Moisture-proof CE,ISO, Magnesia oxide board/Mgo board/Fireproof ... asbestos free2) Non-combustible: PSB, GB8624, CLASS A3) Moisture resistant4) Excellent impact resistant5) Excellent Sound insulation6) High dimensional ... in Water)≤Mpa22MpaGB/T7019-1997Sound InsulationdB≥44dBGBJ121-88Absorption Moisture≤%≤15%GB/T7019-1997Tensile Strength≤Mpa8-13MpaGB/T7019- ...