Magnesium Oxide Board + Fireproof level A + Asbestos Free + Non-Combustible:GB8624 + Moisture Resistant,Easy Install Magnesium Oxide Fireproof BoardFeatures:1) 100% asbestos free2) Non-combustible: PSB,GB8624, CLASS ... , cinemas, theatres, hospitals, train or bus terminals, airports, and school Magnesium Oxide Fireproof Board