PA12 CF adds 15% carbon fiber, which greatly enhances the strength, rigidity and toughness of nylon, and can be used instead of metal in many occasions; the water absorption rate is low, the size of the printed part is less affected by humidity and temperature, and the self-lubricating and wear-resistant properties , making it suitable for printing gears; high temperature resistance, continuous use temperature of parts can reach 120°C, short-term use temperature can reach 160°C, low shrinkage, not easy to warp and crack during printing, and the surface of printed items is matte and delicate .