Design and production of civil aircraft parts. General items: import and export of goods; import and export of technology; network technical services; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; manufacturing of automotive parts and accessories; manufacturing of railway locomotive and rolling stock parts; manufacturing of metal processing machinery; manufacturing of electrical accessories; manufacturing of mechanical and electrical equipment; repair of electrical equipment; repair of general equipment; installation and maintenance of industrial robots; sales of Class II medical devices; sales of mechanical equipment; sales of chemical products (excluding licensed hazardous chemicals); internet sales (excluding goods requiring sales permits); software outsourcing services; leasing of mechanical equipment; information consulting services (excluding licensed information consulting services); human resources services (excluding occupational intermediary services and labor dispatch services); labor services (excluding labor dispatch); maintenance of electronic and mechanical equipment (excluding special equipment); domestic trade agency.