... tile, magnesium oxide cement, ventilation pipes, security covers, fireproof doors, fireproof board, wall panels, artificial marble and other high-rise ... used to produce high-quality magnesium-watt, high-quality fireproof board, magnesium system, packing, magnesium system, decorative board ... Metallurgical industry: It is used to produce the fireproof materials and binder of assemble furnace arm, and ...