Manufacturing of furniture; manufacturing of metal products for safety and fire protection; manufacturing of special instruments for teaching; manufacturing of sporting goods and equipment; production of furniture spare parts; sales of furniture; sales of furniture spare parts; sales of metal products; sales of intelligent robots; sales of office supplies; sales of household appliances; sales of refrigeration and air-conditioning equipment; sales of special instruments for teaching; sales of digital video surveillance systems; sales of electronic products; Internet sales (except for the sale of goods requiring licenses); wholesale of sporting goods and equipment; wholesale of computer software, hardware and auxiliary equipment; retail of daily household appliances ;Retailing of computer software, hardware and auxiliary equipment; research and development of intelligent robots; research and development of motors and control systems; furniture installation and maintenance services; security system monitoring services; security technology prevention system design and construction services; information technology consulting services; information system integration services; information system operation and maintenance services; cloud computing equipment technology services; artificial intelligence general application systems; technical services, technology development, technology consultation, technology exchange, technology transfer, technology promotion; intelligent control system integration; (except for operations restricted or prohibited by the state).