Manufacturing of metal processing machinery; sales of building materials; sales of chemical products (excluding licensed chemical products); manufacturing of plastic products; wholesale of computer software, hardware and auxiliary equipment; sales of mechanical equipment; sales of software; metal cutting processing services; manufacturing of rubber products; manufacturing of lighting fixtures; manufacturing of motorcycle parts and accessories; research and development of intelligent robots; manufacturing of electrical equipment; manufacturing of bicycles; manufacturing of sporting goods and equipment; manufacturing of bicycles for the disabled; software development; new Materials technology promotion services; hardware product wholesale; engineering and technology research and experimental development; automobile parts and accessories manufacturing; metal product repair; mold manufacturing; industrial automatic control system device manufacturing; metal cutting machine tool manufacturing; metal forming machine tool manufacturing; mechanical and electrical equipment manufacturing; sales of non-metallic minerals and products; sales of electrical equipment; Internet sales (except for the sale of goods requiring licenses); leasing of machinery and equipment; manufacturing of photovoltaic equipment and components. .