There are two common types of industrial plugs: fixed type and mobile type. Embedded socket is embedded in the integrated communication cabinet, which is a power supply device that provides basic DC power for communication and data equipment in the same cabinet. It also has certain versatility. CEE connector CEE standard industrial plug socket is an explosion-proof socket, and the temperature is limited below 32 degrees. IP54, that is, dust prevention is level 5: dust intrusion cannot be completely prevented, but the amount of dust intrusion will not affect the normal operation of the product; Waterproof grade 4: prevent splashing water from invading, and prevent splashing water from all directions from invading.Fixed industrial container is an industrial container installed on the wall or floor where it is no longer moving. Generally speaking, the appliance joint is relatively small, which leads to a small temperature rise and a high safety factor. Therefore, in family life, all household appliances that can be placed in a certain position without moving should use fixed industrial plugs. Fixed industrial plugs can be installed in surface-mounted and hidden sockets, and hidden industrial plugs are more widely used.It is a mobile industrial plug with national standard holes. This industrial plug has one or more digits, two grounding paths and two poles and two holes. The plug has detachable polarized plug (for users' own use), non-detachable polar plug (the cord is more than 2m), detachable pole and grounding plug, and the pole and grounding plug cannot be separated.The second type is "multifunctional" general mobile industrial plug (converter type). This kind of industrial plug is a popular product in the market, and it is also a good quality product.