Carbon fiber is a special fiber made of carbon, usually with a carbon content of more than 90%. It is fibrous, soft and can be processed into a variety of fabrics. Characteristics of carbon fiber include light weight, high strength while maintaining high modulus, and resistance to heat, corrosion, scouring and sputtering. In addition, it is highly designable and flexible. It is widely used in many fields such as aerospace, sporting goods, wind power generation and pressure vessels etc.