... 2.Firerproof,waterproof. 3.GreenProduct, moisture resistant calcium silicate board is mainly made from silicious material, lime fractory and reforcing fiber through ... quartz sand, plant fiber, etc.Fireproofing features: Incombustible A-class material (GB8624-1997)Refractory High-point: 4.0 hours (GB/T9978 ... , hospitals, train station or MRT stations and so on. moisture resistant calcium silicate board