With muscovite the most widely used, followed by phlogopite, Mica is widely applied in industrial lines, such as in building materials, fire fighting, fire extinguishing agent, electric welding rod, plastics, electric insulation, paper making, asphalt paper, rubber, pearlescent pigments and other chemical industrials. Used as functional fillers in plastics, paints, coatings, and rubber, Super-fine mica powder can improve the mechanical strength as well as enhance the toughness, adhesion, anti-aging and corrosion resistance, etc. In addition to high electric insulation, anti-acid and alkali corrosion, flexibility, toughness, sliding, heat-proof, sound-proof, and small thermal expansivity, super-fine mica powder also takes the lead in possessing properties of smooth surface, high diameter-thickness ratio, regular shape, strong adhesion, etc. In industrial lines, with its properties of insulation, heat resistance, anti-acid, anti-alkali, compression-resistance, dry picking, it is mainly used as insulation materials for electrical materials and equipments, for making windows of steam boiler and smelting furnace as well as mechanical parts. Mica scrap and mica powder can be processed into mica paper and can also substitute mica flake to make kinds of low-cost and even-thick insulation materials.