The decomposed magnesium oxide is also a good refractory material, and it can also help improve the fire resistance of synthetic materials. At the same time, the water vapor it releases can also be used as a smoke suppressant. Magnesium hydroxide is recognized as an excellent flame retardant in the rubber and plastics industry with triple functions of flame retardant, smoke suppression and filling. Widely used in rubber, chemicals, building materials, plastics and electronics, unsaturated polyesters, paints, coatings and other polymer materials. Especially for mining air guide coated cloth, PVC whole core conveyor belt, flame retardant aluminum composite panel, flame retardant tarpaulin, PVC wire and cable material, mining cable jacket, cable accessories flame retardant, smoke suppression and antistatic , can replace aluminum hydroxide, has excellent flame retardant effect. Compared with similar inorganic flame retardants, magnesium hydroxide has better smoke suppression effect. Magnesium hydroxide does not emit harmful substances during production, use and disposal, and it can also neutralize acidic and corrosive gases generated during combustion. When used alone, the dosage is generally 40% to 60%.