Electricity:

The voltage rates vary and you’ll often see two, maybe three, different types of wall sockets inChina, not a single system as found in most countries. Generally though, they use 220 volts. You can commonly find a two-pin socket that uses ‘flat’ pins as well as a flat, triangular three-pin system (for equipment that requires more juice such as computers or TV sets) although it is not advisable to connect personal and expensive pieces of equipment (laptops and the like) unless you buy a quality adaptor fromwithinChina first.Hong Kongalso uses the old British squared three-pin electricity system.