A1 Non-Combustible Non asbestos No formaldehyde waterproof fireproof fireproof,waterproof,moisture proof,sound and ... high pressure, then its inner structure strengthened. It contains no asbestos and formaldehyde. It is one of the safest material used ... /AYESexterior wall and roofing,steel structure system,etc. TCB Non asbestos high strength exterior cement wall board