brief introduction: Socket: also known as power socket, switch socket. Socket refers to a socket with one or more circuit connections that can be inserted, through which various wiring can be inserted. This makes it easy to connect with other circuits. Through the connection and disconnect between the line and the copper parts, to achieve the final part of the circuit connection and disconnect. Socket classification: civil sockets, industrial sockets, waterproof sockets, ordinary sockets, power sockets, computer so