Car cable is a structure commonly used in throttle accelerator, clutch, choke, hand brake, flameout device and other devices, which can act as an agent to control the speed or traction of the car, generally divided into throttle cable, clutch cable, brake cable, odometer soft shaft, shift cable, etc. Automotive cable sheath is an important component used in automobile control cable, which plays an extremely important role in the performance of automobile cable as a component that protects the internal parts of the automobile cable and transmits the control force.