Mechanical equipment R&D; Specialized equipment repair; Manufacturing of specialized equipment (excluding licensed specialized equipment manufacturing); Retail of computer software, hardware, and auxiliary equipment; Software development; Software sales; R&D of intelligent robots; Sales of intelligent robots; Intelligent control system integration; Sales of electronic products; Sales of electronic components and electromechanical assembly equipment; Sales of communication equipment; Sales of telecommunications equipment; General equipment repair; Sales of electrical equipment; Sales of mechanical equipment; Sales of special equipment; Sales of instruments and meters; Information system operation and maintenance services; Information system integration services; Engineering management services; Maintenance of electronic and mechanical equipment (excluding special equipment); Sales of intelligent vehicle-mounted equipment; Sales of mining machinery; Sales of new automobiles; Retail of automotive parts; Sales of used automobiles; Automobile repair and maintenance; Import and export of goods.