Widely used in sensors, testing instruments, electronic instrumentation, electronic machinery, communications, aviation, navigation, computer, LED, automotive, engineering machinery. Mechanical and Electrical, petroleum survey, transmission control systems, electrical and electrical systems, industrial automation and other fields, has become the international standard electrical connection components, products waterproof, cold-resistant, heat-resistant, easy to install, contact, has been in a variety of complex bad environment under normal use. A physical connection between two devices, mainly two active devices, to transmit a current or signal, power Plug, USB connector, Power Connector, IO port connector, all kinds of sensor connection port, etc. . The invention simplifies the assembly process of electronic products, and also simplifies the batch production process. If an electronic component fails, it can be quickly replaced with a connector. The use of connectors allows engineers greater flexibility in the design and integration of new products, as well as in the use of components to build systems, through the use of connectors for large projects, small Modular design, and greater flexibility.