Instruments and parts, new energy equipment, photovoltaic equipment, electronic components, high and low voltage electrical appliances, industrial automation control system devices, distribution switch control equipment, communication switching equipment, auto parts, motorcycle parts, transformers, rectifiers, inductors, junction boxes, frequency converters, soft start cabinets, thermostats, transformers, charging piles, switches, energy metering boxes , complete sets of electronic control equipment, power hardware, wires and cables, household appliances, sensors, relays, circuit breakers, power fire monitoring equipment, fire protection equipment, public safety equipment, lighting equipment, DC screen R&D, manufacturing, processing, and sales; Wujinjiaodian sales; providing paid assistance services to households; computer software development; import and export of goods, and import and export of technology.