Uses: 1: it is an important inorganic raw material in the chemical industry, used for the production of magnesium carbonate, magnesium hydroxide, magnesium oxide and other magnesium products.  2: in the metallurgical industry for the production of magnesium metal, liquid chlorine and high purity magnesia and is the manufacture of refractory and build the binder of the furnace arm, the manufacture of no. 2 flux and smelting magnesium metal raw materials and casting industry application.  3: in the printing and dyeing textile industry can be added additives, 4: pharmaceutical industry made of magnesium chloride "brine dry" can be used for medicine.  5: agriculture can be used as magnesium fertilizer, potassium magnesium fertilizer and cotton defoliant. 6: in the building materials industry is the production of light building materials such as glass fiber tile, decorative materials, sanitary ware, ceiling, floor brick, magnesia cement, ventilation pipes, anti-theft covers, fireproof doors and Windows, fire prevention board, partition panel, the production of artificial marble and so on high-rise building equipment important raw materials.  In magnesite products can do high quality magnesium tile, high quality fire prevention board, magnesium packing box, magnesium decoration board, light wall board, abrasive abrasive tools, stoves, fireworks primer, etc.7: in other fields can do food additives, protein coagulant, snow melt agent, refrigerant, dust agent .