7 Parts for with build production machinery and machine tools, engines and motors, couplings and gears, namely, gears for machines; plastic components, for use with machines and machine tools for treatment of materials and for manufacturing, namely, mechanical winders and machines for forming coils with pipes made of plastic materials; 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 and pump housings; 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