Technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; sales of industrial automatic control system devices; repair of special equipment; repair of general equipment; sales of industrial robots; installation and maintenance of industrial robots; sales of mechanical equipment; wholesale of hardware products; retail of hardware products; sales of electronic products; sales of rubber products; sales of plastic products; sales of household appliances; sales of metal cutting and welding equipment sales; sales of metal materials; sales of construction materials; sales of knitted textiles; sales of labor protection products; sales of daily necessities; sales of chemical products (excluding licensed chemical products); sales of office supplies; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; wholesale of auto parts; retail of auto parts; Internet sales (except for the sale of goods requiring licenses); import and export of goods; import and export of technology; import and export agents