1, Furukawa socket in Japan is a triangular socket, which is suitable for the connection of high-power electrical appliances. It has the characteristics of pressure resistance, heat resistance, wear resistance and fire prevention. However, because its structure is different from ordinary two-wire socket, it needs to be used with special plug, so it is not universal.
2. Sine socket is an international second-line socket, which is interchangeable and easy to use, but it is easy to overload when connecting high-power electrical appliances, so it is not suitable for high-power electrical appliances.