Mechanical equipment research and development; engineering and technology research and experimental development; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; household appliance research and development; packaging special equipment manufacturing; printing special equipment manufacturing; household appliance manufacturing; general equipment manufacturing (excluding special equipment Manufacturing); hydraulic power machinery and component manufacturing; pneumatic power machinery and component manufacturing; metal daily necessities manufacturing; rubber product manufacturing; daily necessities production special equipment manufacturing; industrial robot manufacturing; electronic component manufacturing; integrated circuit manufacturing; other electronic device manufacturing; electronic components and electromechanical Manufacturing of component equipment; manufacturing of mechanical and electrical equipment; manufacturing of paper products; manufacturing of plastic products; manufacturing of lighting fixtures; manufacturing of integrated circuit chips and products; manufacturing of special currency equipment; manufacturing of general parts; manufacturing of automobile parts and accessories; manufacturing of motorcycle parts; manufacturing of distribution switch control equipment ; Manufacturing of semiconductor lighting devices; manufacturing of hardware products; production of daily masks (non-medical); production of special labor protection supplies; wholesale of protective supplies for medical staff; sales of electronic products; Internet sales (except for the sale of goods requiring licenses); wholesale of medical masks; import and export of goods; import and export of technology.