Mold manufacturing; washing machinery manufacturing; sewing machinery manufacturing; manufacturing of special equipment for the production of glass, ceramics and enamel products; manufacturing of metal daily necessities; retail of kitchenware, sanitary ware and daily sundries; household appliance installation services; manufacturing of daily ceramic products; manufacturing of daily glass products; household use Manufacturing of electrical appliances; manufacturing of mechanical and electrical equipment; manufacturing of refrigeration and air-conditioning equipment; manufacturing of non-electric household appliances; engineering and technology research and experimental development; wholesale of kitchenware, sanitary ware and daily sundries; sales of daily necessities; sales of sanitary ware; sales of daily sundries; sales of architectural ceramic products; Sales of special ceramic products; sales of new ceramic materials; sales of sanitary ceramic products; sales of daily glass products; sales of daily necessities; sales of lighting appliances; sales of lamps; sales of luggage; sales of household products; sales of automobile decorative products; wholesale of daily necessities; sales of household appliances; retail of daily household appliances; sales of gifts and flowers; retail of arts and crafts and collectibles (except ivory and its products); natural science research and experimental development; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; network technology services; Internet of Things Internet technology research and development; Internet of Things technical services; terminal metering equipment manufacturing; software development; electronic (gas) physical equipment and other electronic equipment manufacturing; computer software, hardware and peripheral equipment manufacturing; computer equipment sales; environmental sanitation and public facilities installation services; general mechanical equipment installation services; electronic and mechanical equipment maintenance (excluding special equipment); daily product repair; special equipment repair; environmental protection special equipment sales; smart home gateway manufacturing; environmental monitoring special instrument sales; fans and fans manufacturing; mechanical equipment research and development; household appliances Equipment research and development; professional design services; industrial design services; electrical equipment repair; general equipment repair; electrical machinery equipment sales; Internet of Things application services; network equipment sales; Internet of Things equipment sales; mechanical equipment sales; electrical equipment sales; general equipment manufacturing (excluding special equipment manufacturing); technology import and export; goods import and export; various engineering construction activities; fire protection facility engineering construction; residential interior decoration and decoration; construction engineering design; special equipment installation, transformation and repair; special equipment manufacturing; special equipment design; gas burning appliance installation and maintenance