R&D, design, and manufacturing of intelligent cleaning machinery and accessories, electronic products and accessories, household appliances, and electromechanical products; self-operated and agent for the import and export of various commodities and technologies. Disinfectant sales (excluding hazardous chemicals) licensed items: Internet sales of food; production of disinfection equipment; sales of disinfection equipment; second category value-added telecommunications business; general food business items: advertising production; sales of household appliances; sales of electronic products; sales of office equipment; sales of daily necessities; sales of office supplies; sales of sanitary ware; retail of edible agricultural products; retail of aquatic products; wholesale of kitchenware, sanitary ware and daily sundries; sales of daily necessities; retail of cosmetics; wholesale of cosmetics; manufacturing of gas and liquid separation and purification equipment ; Sales of gas and liquid separation and purification equipment; advertising (not broadcast stations, TV stations, newspapers and periodical publishing units); Internet sales (except for the sale of goods requiring licenses); technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; advertising design, agency; sales of plastic products; sales of engineering plastics and synthetic resins; sales of molds; leasing services (excluding licensed leasing services); sales of machinery and equipment; sales of special electronic equipment; sales of mechanical and electrical equipment; import and export of goods