Sales of Class I medical devices; import and export of goods; import and export of technology; conference and exhibition services; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; sales of building materials; environmental protection monitoring; sales of communication equipment; sales of daily necessities; social and economic consulting services; sales of mechanical equipment; sales of electrical equipment; wholesale of hardware products; information consulting services (excluding licensing information consulting services); sales of metal products; sales of office supplies Sales of office equipment consumables; sales of metal materials; sales of second-class medical devices; sales of sanitary products and disposable medical supplies; wholesale of medical masks; sales of chemical products (excluding licensed chemical products); wholesale of protective equipment for medical staff; engineering and technology research and experimental development; sales of labor protection products; sales of daily necessities; sales of daily masks (non-medical); repair of special equipment; sales of instruments and meters; wholesale of sporting goods and equipment; sales of knitted textiles; medical Retail sales of protective equipment for paramedics; retail sales of sporting goods and equipment; retail sales of hardware products; sales of fire-fighting equipment; retail sales of clothing and apparel; sales of industrial textile products; sales of luggage; professional cleaning, cleaning, and disinfection services; production of Class I medical devices; retail sales of medical masks; medical research and experimental development; sales of entertainment supplies and indoor entertainment equipment; sales of special instruments for teaching; retail of daily household appliances; production of labor protection supplies; production of protective supplies for medical staff (Class I medical equipment Equipment); medical research and experimental development (except for the development and application of human stem cells, genetic diagnosis and treatment technologies); production of daily masks (non-medical); manufacturing of entertainment supplies and indoor entertainment equipment; wholesale of arts and crafts and collectibles (except ivory and its products); sales of arts and crafts and ceremonial items (except ivory and its products); sales of toys, animation and entertainment supplies; sales of entertainment and entertainment supplies; wholesale of stationery supplies; sales of daily miscellaneous goods; sales of outdoor supplies. Licensed items: Operation of Class III medical devices; production of medical masks; production of Class II medical devices; inspection and testing services; medical services; production of Class III medical devices; production of protective equipment for medical staff (Class II medical devices). (You are not allowed to engage in business activities that are prohibited or restricted by national and municipal industrial policies.)