Based on Nylon 6/66 copolymer, the addition of 20% carbon fiber significantly enhances the strength, stiffness, and toughness of nylon, making it capable of replacing metal materials in many cases. Its self-lubricating wear resistance makes it suitable for printing gears. High toughness and impact resistance make it ideal for printing durable parts. With a high temperature resistance and a heat distortion temperature of up to 155 °C, along with low shrinkage, it ensures that it does not easily warp or crack during printing. The surface of the printed models is matte and delicate.