A large number of connectors are used from computers and electric vehicles to military aircraft and various types of spacecraft. Perhaps people are relatively unfamiliar with the term connector, but it is closely related to our work and life. Connectors first appeared during the Second World War. At that time, they were mainly used in various military products. After the war ended, the world's development was mainly based on economic development, and connectors also began to appear in the civilian field. For example, Our more common televisions, washing machines, electric fans, etc., and later, with the rapid development of technology, various electronic products have sprung up, and the types of connectors have become more abundant.