Design and production of civil aircraft parts. General items: construction machinery manufacturing; construction machinery sales; auto parts and accessories manufacturing; auto parts retail; auto parts research and development; railway locomotive and rolling stock parts manufacturing; railway locomotive and rolling stock parts sales; rail transit engineering machinery and parts sales; mechanical parts and components processing; mechanical parts and components sales; mechanical equipment research and development; metal cutting and welding equipment manufacturing; metal cutting and welding equipment sales; hardware product manufacturing; hardware product wholesale; hardware product retail; metal product research and development; non-ferrous metal casting; plastic product manufacturing; plastic product sales; road freight transport for general cargo vehicles with a total mass of 4.5 tons and below (excluding network freight and dangerous goods); road freight transport station operation; transport cargo packaging services; goods import and export; software sales; import and export agency; technical services, technology development, technical consulting, technology exchange, technology transfer, technology promotion; software development; network technology services; civil aviation materials sales.