Magnesium compounds are also called magnesium materials. The main industrial products are composed of magnesium refractory materials, magnesium building materials, magnesium chemical materials, magnesium metal and magnesium alloys. Its products are widely used in various fields of the national economy, such as metallurgy, construction, chemical industry, automobile manufacturing, electronics, aerospace, transportation, medicine, food, agriculture and animal husbandry, biology, and communications. The quantity and quality of its products will directly affect the development of the national economy. Magnesium chemical materials are also called magnesium salts, mainly including five major series of products, namely magnesium oxide, magnesium carbonate, magnesium hydroxide, magnesium sulfate, and magnesium chloride, as well as other magnesium-containing compound products, fine magnesium compounds, and more than 2 kinds of chemical products with different specifications and qualities with practical value.