Production process:
(1) the original yarn preparation, and polyacrylonitrile precursor yarn mainly adopts wet spinning system, asphalt and phenolic strand is made by melt spinning.Preparation of high-performance polyacrylonitrile based carbon fiber with the high purity, high strength and quality of polyacrylonitrile precursor, preparation of raw silk with a monomer of itaconic acid, etc.Preparation of anisotropic high-performance asphalt asphalt base carbon fiber using pretreatment into mesophase, pre mesophase (benzene soluble anisotropic asphalt) and potential mesophase (quinoline soluble anisotropic asphalt), etc.As the ablative material with viscose rayon based carbon fiber, the requirements of the strand contains no alkali metal ions.
(2) preoxidation (polyacrylonitrile fiber from 200 to 200 ℃), don't melt (asphalt 200-200 ℃) or heat treatment (240 ℃) viscose fiber, for heat resistant and not melt fibre, phenolic base carbon fiber without this process.
(3) the carbide, its temperature: 1000 to 1500 ℃, polyacrylonitrile fiber asphalt from 1500 to 1500 ℃, viscose fiber, 400 to 400 ℃. 
(4) the graphitization, polyacrylonitrile fiber from 2500 to 3000 ℃, and 2500 to 2800 ℃, asphalt viscose fiber from 3000 to 3200 ℃.
(5) surface treatment, such as gas phase or liquid phase oxidation, given fiber chemical activity, and to increase the affinity of resin.
(6) sizing processing, to prevent fiber damage, improve the affinity with resin matrix.The section of the fiber with different structure.