... 46% mgcl2 flake used for mgo board production 1. Used for mgo board production 2. Purity above ... monoclinic crystal, salty, has certain corrosion resistance. For making metal magnesium, disinfectants, frozen brine, ... tiles, decorative materials, sanitary ware, ceiling, floor brick, magnesia cement, ventilation pipes, anti-theft covers, fireproof doors and Windows, fire prevention board, partition board ...