It is used for printing and dyeing thin cotton cloth and silk, as a weight agent for cotton and silk and a filler for kapok products. It is also used in the manufacture of porcelain, pigments and fireproof materials. Used in medicine as a purgative. Microbial industry as a medium component, brewing additives, to supplement brewing water magnesium, as a source of nutrients during fermentation. Used in the tanning industry as a filler to enhance heat resistance. Used as magnesium fertilizer in agriculture. Used in light industry for the production of fresh yeast, monosodium glutamate and as a stabilizer of calcium hydrogen phosphate in the production of toothpaste. A coagulant for cement. It is also used in the pulp industry, rayon and textile industry. Nutritional supplements; Curing agent; Flavor enhancer; Processing AIDS. Brewing additives to supplement the magnesium in brewing water as a nutrient source during fermentation to improve fermentation capacity. Improve the flavor of synthetic sake (dosage 0.002%). Adjust the hardness of water. It is used in Europe to produce "Bolton" type beer. 2. More combined with calcium salt for wine mother water, according to 4.4g/ 1001 water added can increase the hardness of 1 degree, multi-use will produce bitter taste, and produce hydrogen sulfide odor. As a food fortification agent. China's regulations can be used for dairy products, the amount of 3 ~ 7g/kg; The amount used in liquid and milk beverages is 1.4 ~ 2.8g/kg; The maximum use in mineral beverages is 0.05g/kg. 3. It is used to supplement the trace element magnesium in feed additives. Magnesium is a cofactor of many enzyme systems in animals, and is also a component of bone 4. It is used as a nutrient supplement, curing agent, flavor enhancer and processing aid. Brewing additives to supplement magnesium in brewing water; As a nutrient source during fermentation, to improve fermentation capacity. Improve the flavor of synthetic sake (dosage 0.002%). Adjust the hardness of water. It is used in Europe to produce "Bolton" type beer. More combined with calcium salt for wine mother water, according to 4.4g/100L water can increase the hardness of 1 degree, multi-use will produce bitter taste, and produce hydrogen sulfide odor. It can also be used as a feed additive. 5. Used as an analytical reagent, such as a precipitant for sulfate. It is also used in medicine, printing and dyeing, paper making, ceramics and leather industry. 6. This product is used as filler for leather. As a weighting agent for fine cotton cloth in the printing and dyeing industry. Paper sizing agent, etc.