Automobile is an important travel tool in life. Automobile wire plays a very important role as part of the automobile. Automobile wire is mainly used in automobile internal connection, instrument, battery and circuit. It is characterized by cold resistance and high temperature resistance. The color of the automobile line is very large, which makes it convenient for the car circuit to be distinguished during maintenance. The commonly used models are German standard automobile line FLRY-B national standard QVR-105 daily standard AVSS American Standard GXL and so on.