7 High alloy steel or iron rolls for rolling mills; cemented carbide rolls for rolling mills; parts of injection or extrusion machines, namely, cylinders and screws; parts for die casting machines, namely, cylinders, ladles, ceramic tubes for protecting parts of machines, ceramic sleeves for protecting parts of machines; cutting machines for metalworking, cutting machines for plastic processing; non-electronic prime movers not for land vehicles, namely, gasoline engines, diesel engines; internal combustion engines not for land vehicles; engine parts, namely, intake manifolds, piston rings, crank shafts, connection rods, exhaust manifolds, turbo charges, turbine components, collectors for the exhaust components, tail-pipes, headers, mufflers, exhaust gas filters, exhaust gas purifying units, exhaust gas reduction units, exhaust gas treatment units for catalytic converters, catalytic converters for exhaust gas, pollution prevention and fuel consumption efficiency units; linear motors; machine elements not for land vehicles, namely, valves, springs, shafts, axles, spindles, bearings, shaft couplings, power transmissions and gearings for machines, transmission chains other than for land vehicles