Mica main crystallize monoclinic system, crystal appears pseudo-hexagonal thin flakes, scaly shape, plate type, and sometimes showed a pseudo-hexagonal columnar shape. Most used in industry is muscovite. It is widely used in building material industry, the fire industry, fire extinguishing agents, welding, plastics, electrical insulation, paper, bitumen paper, rubber, pearlescent pigments and other chemical industries. In order to satisfy different fields, our factory can make specified products according to customers' requirements.