Automobile wiring harness is the main body of automobile circuit network, without wiring harness there is no automobile circuit. Wiring harness refers to a component that is formed by crimping a contact piece (connector) made of copper material and a wire and cable, and then plastically pressing an insulator or an external metal shell. Wiring harness industry chain includes wire and cable, connectors, processing equipment, wiring harness manufacturing and downstream application industry. Wiring harness is widely used in automobiles, household appliances, computers and communication equipment, various electronic instruments . The upstream of the automotive wiring harness industry chain refers to the production of raw materials such as copper, rubber and wire; the midstream refers to the production of automotive wiring harnesses; and the downstream is mainly for vehicle manufacturers and some parts supporting suppliers. Wire processing equipment, wire cutting and stripping, terminal crimping, automatic line production demand is increasing. The sales of car will directly affect the demand of automobile wiring harnesses. But with the development of new energy automobile industry in our country, the sales of new energy vehicles is rising. Although new energy vehicles have made new requirements for automobile wiring harnesses, but at the same time, it also brings the new demand in future.