Valves and gate valves of metal, except those used as machine parts; raw or partially processed common metals being unwrought or semi-wrought common metals; raw or partially processed cast iron being unwrought or semi-wrought common cast iron; raw or partially processed steel being unwrought or semi-wrought steel; raw or partially processed iron being unwrought or semi-wrought iron; raw or partially processed copper being unwrought or semi-wrought copper; raw or partially processed brass being unwrought or semi-wrought brass; metal pipes; elbows of metal for pipes; metal tubing; junctions of metal for pipes; steel pipes; sheets of metal, not of precious metal; steel sheets; pipes of metal, namely, pressure pipe lines of metal; pipe muffs of metal; clamps of metal for pipes; bolts of metal; containers of metal for compressed gas or liquid air

Motors and engines except for land vehicles, drives for motors and general machine parts, namely shafts, bushings, bearings, joints, levers, connecting rods; exhaust manifolds for motors and engines; pressure regulators used as machine parts; pressure-reducing valves used as machine parts; pressure valves used as machine parts; electric motors and engines, except for land vehicles; hydraulic drives for machines, motors and engines; hydraulic motors and engines; valves being parts of machines; fuel savers for motors and engines; cooling radiators for motors and engines; machine housings being parts of machines; axles for machines; pneumatic drives for machines, motors and engines; mufflers for motors and engines; valves used as machine parts; carburetors; exhausts for motors and engines; regulators used as machine parts; compressed air machines; compressed air motors and engines being parts of machines; cylinders for machines

Drives, motors, engines for land vehicles; electric motors and engines for land vehicles; brakes for vehicles; housings for land vehicle components, except for motors and engines, namely, exhaust valves, intake valves, energy recuperation systems, namely, thermoacoustic heat engines and rankine heat engines; hydraulic circuits for vehicles

Treatment of materials in the nature of metal by means of processing; grinding; treatment of materials by abrading; welding; mill working; custom manufacturing and production services of automobile components and machine components

Engineering services; technical research in the field of mechanical engineering; research in the field of mechanical engineering; research and development services regarding new products for third parties; services of physicists, namely, thermodynamics and material science; technological consultancy in the field of mechanical engineering, thermodynamics and material science