Ball bearings for use in machines, namely, Motor drive shaft,civil light motor vehicle transmission parts, machining equipment, factory production line mechanical transmission bearings, engine and motor drive shafts, transmission, instrumentation, electrical, household appliances, internal combustion engine, traffic vehicles, automobiles, machine tools; Cooling radiators for motors and engines; Oil pumps for land vehicles; Oil pumps for use in motors and engines; Pistons for engines; Power-op...