Metal processing machinery manufacturing; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; sales of metal materials; professional cleaning, cleaning, and disinfection services; urban greening management; landscaping project construction; hotel management; catering management; property management; park management services; energy-saving management services; project management services; housekeeping services; general equipment repair; special equipment repair; building cleaning services; daily necessities Sales; sales of household appliances spare parts; sales of furniture; retail of daily household appliances; repair of daily household appliances; sales of household appliances; sales of building materials; sales of machinery and equipment; leasing of machinery and equipment; sales of wires and cables; sales of non-metallic minerals and products; sales of automobile decorative products; retail of automobile parts and accessories; retail of edible agricultural products; retail of protective equipment for medical staff; retail of photographic equipment and telescopes; sales of electronic products; sales of building decoration materials; Manufacturing of building waterproofing membrane products; sales of electrical equipment; sales of mechanical and electrical equipment; repair of electrical equipment; manufacturing of mechanical and electrical equipment; research and development of mechanical equipment; manufacturing of metal materials; manufacturing of refrigeration and air-conditioning equipment; research and development of household appliances; manufacturing of household appliances; sales of office supplies; wholesale of stationery supplies; wholesale of sporting goods and equipment; retail of sporting goods and equipment; wholesale of daily necessities; rental of daily necessities; manufacturing of sporting goods and equipment; gases and liquids Manufacturing of solid separation and purification equipment; sales of gas, liquid separation and purification equipment; manufacturing of special water resources machinery and equipment; manufacturing of smart home consumer equipment; sales of smart home consumer equipment; residential water and electricity installation and maintenance services; construction of sports facilities facilities; research and development of offshore wind power related systems; sales of new energy vehicle power swap facilities; production of chemical products (excluding licensed chemical products); sales of chemical products (excluding licensed chemical products). (You are not allowed to engage in business activities that are prohibited or restricted by national and municipal industrial policies.)