7 Mechanical seals of metal; steam engine boilers and parts and fittings therefor, namely, boiler tubes, boiler fans, coal mills of boilers, burners of boilers, soot blowers of boilers, exhaust emission control filters, valves, nozzles, exhaust pipes, fuel pumps, condensers, and gas/liquid separator; steam engines, not for land vehicles and parts and fittings therefor, namely, boilers and turbines, exhaust emission control filters, cylinders, piston rods, valves, nozzles and cranks, cylinder heads, engines igniters, exhaust pipes, engine joints, engine bearing, fuel pumps, condensers, spark plugs, power transmission gearings, rotors and deaerator of radiators; gas, steam and wind turbines not for land vehicles and their parts and fittings therefor, namely, turbine engines, air filters for turbine, machine wheels, stators, rotors, nacelle, power transmission gearings, gear box, injectors for engines, housings, and turbine blades; compressed air engines not for land vehicles, and their parts and fittings therefor, namely, compressed air pumps, air tank, air filters, valves, and turbochargers; nuclear prime movers not for land vehicles and parts and fittings therefor, namely, impeller pumps, impeller motors, motors, reactor coolant pump, control rod, control rod drive mechanism, steam generator, spent fuel cask, and pressurizer; machine parts, namely, combustors; starters for motors and engines; AC and DC motors not for land vehicles and parts therefor, namely, stators, rotors, bearings, cooling fans and shafts; alternators; DC generators; generators of electricity; industrial machine presses; chemical processing machines and apparatus, namely, electromechanical machines for chemical processing; denitrification equipment, namely, selective catalytic reduction machines; flue gas desulfurization machines for use in fossil power plants; machine elements not for land vehicles, namely, shafts not for land vehicles, bearings not for land vehicles, shaft couplings or connectors not for land vehicles, power transmissions and gearing for machines not for land vehicles, shock absorbers not for land vehicles, springs not for land vehicles, breaks not for land vehicles, and valves not for land vehicles; pneumatic or hydraulic machines and instruments, pumps being parts of machines, engines or motors, centrifugal pumps, reciprocating pumps, rotary pumps, axial flow pumps, mixed flow pumps, vacuum pumps, diffusion pump, bellows, blowing machines for the compression, exhaustion and transport of gases, centrifugal fans, axial flow fans, turbofan compressors, centrifugal compressors, reciprocating compressors, rotary compressor axial flow compressor, and turbo compressors