Class II and III radiation device production; Civil aircraft parts manufacturing; Civil aircraft maintenance general items: Special ceramic product manufacturing; Steel rolling processing; Non-ferrous metal rolling processing; Metal cutting processing services; Metal structure manufacturing; Machine tool functional parts and accessories manufacturing; Material handling equipment manufacturing; Pump and vacuum equipment manufacturing; Hydraulic power machinery and components manufacturing; Hydrodynamic power machinery and components manufacturing; Pneumatic power machinery and components manufacturing; General parts manufacturing; Mechanical parts and components processing; High-speed rail equipment and parts manufacturing; Railway rolling stock parts manufacturing; Motor and its control system research and development; Computer software, hardware and peripheral equipment manufacturing; Instrument and meter manufacturing; Industrial automatic control system device manufacturing; Experimental analytical instrument manufacturing; Testing machine manufacturing; Optical instrument manufacturing; Metal product repair; Mechanical equipment research and development; Valve and cock research and development; New material technology promotion services.