Bulldozers; earth moving machines, namely, excavators; road rollers; earth moving machines, namely, loaders; concrete and asphalt mixers; earth moving machines, namely, scrapers; driving motors, other than for land vehicles; oil pumps for automobiles; hydraulic controls for machines, motors and engines; shaft couplings for machines; bearings, as parts of machines; conveyor belts; road sweeping machines, self-propelled; automobile maintenance equipment, namely, car washing installations, other than hand-operated