Carbon fibers having excellent performance of elemental carbon, such as a small proportion, excellent heat resistance, thermal expansion coefficient and high thermal conductivity, good corrosion resistance and electrical conductivity and the like.

Meanwhile, it also has a fiber-like soft music, can be woven processing and filament winding. The best strength properties of carbon fibers is more than the general and specific modulus of reinforcing fibers and a resin which is formed of a composite material has a specific strength and specific modulus than steel and aluminum alloy is about three times higher. Carbon fiber composites used in the aerospace, missile and sports equipment, can significantly reduce weight, improve payload, performance improvement, is an important structural materials aerospace industry.