According to Baidu Encyclopedia, mica flakes are composed of polysilicate muscovite, Yingshi, garnet and rutile, and albite, zoisite and hard chlorite can appear. Garnet is rich in iron and magnesium, and Si in polycrystalline muscovite can reach 3.369, which is also a high pressure combination. It has the functions of insulation and low loss thermal resistance, and is also a good black body. Natural mica sheet is a mica part with a certain thickness and shape, which is made of thick mica by peeling, fixing thickness, cutting, drilling or punching. This product is suitable for TV sets, power capacitors, thermal relays, monitoring displays, aerospace, aviation, communications, radar, heat-resistant frames and other raw and auxiliary materials.