7 Parts for use with build production machinery and machine tools, engines and motors, couplings, and gears, namely, plastic bearings, plastic punching and cutting pads, sliding and bearing elements, pump housings; plastic components, for use with machines and machine tools for treatment of materials and for manufacturing, namely, plastic bearings, plastic punching and cutting pads, sliding and bearing elements, pump housings; plastic parts for pumps and fans, namely, cooling fans; chains and curve guides being parts for machines; plastic parts for drive systems and conveying installations, namely, conveyor lines; parts of machines, namely, gear and drive wheels, track and guide rollers; sliding and bearing elements being sliding bearings for machines; sliding mechanical seals; control discs being parts of machines; pump housings being parts of machines; machine parts, in particular, bearings of plastic being plastic radial ball bearings; die-cutting and cutting boards of plastic being parts and fittings for machines, namely, die-cutting machines