Carbon fiber is used in addition to insulating insulation materials in conventional use. It is often added as a reinforcing material to materials such as resin, metal, ceramics, concrete, etc. to form a composite material. Carbon fiber has become the most important reinforcement for advanced composite materials. Carbon fiber composite materials are light, strong, light and rigid, high temperature resistant, corrosion resistant, fatigue resistant, structural dimensional stability, good design, large-area integral molding, etc., and have been used in aerospace, defense, military and civil industries. Various fields are widely used. Carbon fiber can be processed into fabrics, felts, mats, tapes, paper and other materials. High performance carbon fiber is the most important reinforcement for the manufacture of advanced composite materials.