The standard system is divided into four parts: basic standards, power supply standards, construction and operation standards, and service network standards, which mainly fall under three technical routes for charging, namely conductive charging, wireless charging and battery swap and involve 21 professional sectors, such as terminology, conductive charging system and device standards, wireless charging system and device standards, traction battery pack standards, metering, service network, etc. There are 158 planning standards, including 57 national standards, 62 sectoral standards and 39 group standards. So far, 72 standards have been published, 58 under revision or under development and 32 to be formulated.