1. Grade: A7-20, A6-40, A5-50, A5-60, A5-70 2. Use: Thermal insulation, rubber, brake, textile etc Chrysotile1. Grade: A7-20, A6-40, A5-50, A5-60, A5-702. Use: Thermal insulation, rubber, brake, textile etc3. Feature:1). Main chemical content is SiO2, MgO, crystal water etc.2). No magnetism, No conduction of electricity, Flame proof, Alkali proof.3). Fiber is tough, tensile and soft with better ...