3D printers; Electric sweepers; Electric can openers; Electric soldering apparatus; Electric saws; Centrifugal mills; High pressure washers; Cranes; Valves as machine components; Packing machines under vacuum; Lapping machines; Puddling machines; Juice machines; Compressing machines; Compressors for dehumidifying machines; Skid-steer loaders; Engraving machines; Water pumps for use in motors and engines; Lawnmowers; Power-operated garden hose reels; 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