Carbon fiber is a new fiber material with high strength and high modulus fiber containing more than 95% carbon. It is a microcrystalline graphite material obtained by the carbonization and graphitization of the organic fibers, such as flaky graphite microcrystals, stacked along the axial direction of the fiber. It not only has the intrinsic characteristic of carbon material, but also has the soft processability of textile fiber. It is a new generation of reinforced fiber. Carbon fiber "an hand in a velvet glove lighter than aluminum," the quality, but the strength is higher than that of steel, and has the characteristics of corrosion resistance, high modulus, in the national defense and civilian areas are important materials. Carbon fiber has many excellent properties, carbon fiber axial strength and high modulus, low density, high performance, no creep, non oxidation under the environment of high temperature resistance, good fatigue resistance, between heat and electrical conductivity between the metal and non metal, smaller thermal expansion coefficient and anisotropy, good corrosion resistance, X Radiability good. As we know the carbon fiber sheet, carbon fiber tube were popluar products made of carbon fiber. More and more CNC carbon cutting and customized service spring up.