... products. Calcium silicate board is mainly made from silicious material, lime factory and reforcing fiber through the process of ... *(4-6mm) 603*603*(4-6mm) Main Parameter :1) Main material : Tobermorite, cement , quartz sand , reinforced fiber.2) Color: ... Silicate, quartz sand, plant fiber, etc.Fireproofing features: Incombustible A-class material (GB8624-1997)Refractory High-point: 4.0 hours(GB ...