Manufacturing of distribution switch control equipment; sales of distribution switch control equipment; manufacturing of plastic products; sales of plastic products; manufacturing of electrical accessories; sales of electrical accessories; manufacturing of power transmission and distribution and control equipment; research and development of distribution switch control equipment; sales of seals; manufacturing of seals; sales of rubber products; manufacturing of rubber products; sales of solar thermal power generation products; sales of solar thermal power generation equipment; sales of solar thermal utilization equipment; solar power generation technical services; Sales of lighting appliances; manufacturing of lighting appliances; manufacturing of special equipment for the production of lighting appliances; sales of special equipment for the production of lighting appliances; manufacturing of motorcycle parts and accessories; retail of motorcycles and spare parts; wholesale of motorcycles and spare parts; sales of new energy vehicle electrical accessories; instrument repair; electrical instrument manufacturing; electrical instrument sales; intelligent instrument sales; intelligent instrument manufacturing; instrument manufacturing; metal product sales; metal product repair Management; metal daily necessities manufacturing; daily necessities sales; photovoltaic equipment and component sales; photovoltaic equipment and component manufacturing; household appliance spare parts sales; household appliance manufacturing; household appliance sales; hardware product manufacturing; hardware product retail; mechanical and electrical equipment sales; mechanical and electrical equipment manufacturing; mechanical equipment sales; mechanical equipment research and development; instrumentation sales; electronic product sales; tea set sales; household supplies sales; household supplies manufacturing ; Sales of industrial textile finished products; Manufacturing of industrial textile finished products; Mold manufacturing; Mold sales; Manufacturing of special equipment for plastic processing; Sales of special equipment for plastic processing; Sales of synthetic materials; Sales of power electronic components; Manufacturing of power electronic components; Manufacturing of fasteners; Sales of fasteners; Manufacturing of power facilities and equipment; Sales of power facilities and equipment; Internet sales (except for the sale of goods requiring licenses); Technology import and export; Import and export of goods.