Distribution switch control equipment manufacturing; power facility equipment manufacturing; power facility equipment sales; electrical instrument manufacturing; electrical instrument sales; intelligent instrument sales; intelligent instrument manufacturing; mechanical and electrical equipment manufacturing; electrical machinery equipment sales; computer software, hardware and auxiliary equipment wholesale; office equipment sales; office supplies Sales; repair of computers and office equipment; sales of communication equipment; sales of mobile terminal equipment; sales of optical communication equipment; sales of security equipment; manufacturing of power transmission, distribution and control equipment; sales of distribution switch control equipment; wholesale of automobile parts; wholesale of motorcycles and spare parts; manufacturing of special electronic equipment; manufacturing of household appliances; sales of household appliances; Manufacturing of integrated circuits; manufacturing of electrical equipment; sales of electrical equipment; manufacturing of transformers, rectifiers and inductors; sales of power electronic components; manufacturing of clocks and timing instruments; sales of clocks and timing instruments; sales of electronic products; wholesale of sporting goods and equipment; wholesale of stationery; sales of outdoor supplies; sales of second-hand daily necessities; daily miscellaneous goods Sales of products; wholesale of hardware products; sales of daily masks (non-medical); sales of drawing, calculation and measuring instruments; sales of special instruments for teaching; sales of intelligent robots; manufacturing of lighting fixtures; sales of lighting fixtures; sales of industrial automatic control system devices; sales of household appliances spare parts; Internet sales (except for the sale of goods that require licensing). Licensed items: import and export of goods; import and export of technology.