3D printers; Bellows being parts of machines; Electric welding machines; Filter silencers for machines; Fluid power component kit comprising hose and fittings for use in machinery; Industrial chemical reactors; Industrial surface treatment equipment, namely, vacuum plasma treatment systems comprised of a high frequency, high voltage generator, controls, and treatment chamber and structural parts therefor; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Machine parts, namely, mechanical seals; Parts for compressed-air tools, namely, brakes, filters, hoses, pipes, couplings valves, switches, compressors, clamping tools and injectors; Parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges; Self-lubricating mechanical friction parts, especially of composite materials, namely, wear rings, washers, bushings, spherical bearings, bearing pads, sliding blocks and machine transmission gears all for load bearing machines, conveyors, handling trucks and machines, lifting machines, agricultural machinery, construction equipment machines and hydraulic turbines; Semiconductor wafer processing equipment; Vacuum pumps; Valves as machine components