Socket interface refers to the interface between electrical equipment or electronic equipment and power supply. Different countries and regions have different socket standards, which stipulate the design of plugs and sockets to ensure the safety and compatibility of electrical equipment. The following are some common socket interface types:

Europlug: The socket interface is a two-legged round plug, which is widely used in most parts of Europe. This kind of plug is usually used in small electrical equipment.

(NEMA socket): The shape and design of a series of NEMA (National Electrical Manufacturers Association) standard sockets used in the United States vary according to the use. Common ones include NEMAA 1-15 (two-pin plug) and NEMA 5-15 (three-pin plug).

British Socket (BS 1363): Socket interface is a standard used in Britain and other regions, with three rectangular plugs. British sockets usually include switches and fuses to improve the safety of electrical equipment.

Australia/New Zealand Socket: Australia and New Zealand use similar socket standards, and the plug is designed as three pins. The Australian socket standard is AS/NZS 3112.

China socket (GB standard): China has adopted a series of national standards, including socket design. There are two-pin plugs and three-pin plugs commonly used in China, which meet the standards of GB 1002 and GB 2099 respectively.

International universal socket (IEC standard): IEC (International Electro-technical Commission) this standard has formulated a series of international universal socket standards, such as C-type (Europe), F-type (Germany) (Germany), G-type (Britain) (United Kingdom) and A-type (United States).

Please note that only some common socket interfaces are listed here, not all types of sockets. When connecting equipment, make sure to use the correct plug to avoid electrical compatibility problems. At the same time, some international tourism adapters can help solve the problem of using different sockets in different countries.