Components of axles, brakes, steering and suspension systems for heavy trucks, buses and trailers, namely, oil seals, operating cylinders, brake calipers, brake chambers, brake discs, brake drums, brake lining kits, brake master cylinders, brake pad kits, brake signal transmitters, piston brake cylinders, pistons, slack adjusters, spring brake chambers, power steering pumps, power steering pump repair kits, air springs, height sensors and pressure controllers; components of axles, brakes, steering and suspension systems for off-road land vehicles, namely, oil seals, operating cylinders, brake calipers, brake chambers, brake discs, brake drums, brake lining kits, brake master cylinders, brake pad kits, brake signal transmitters, piston brake cylinders, pistons, slack adjusters, spring brake chambers, power steering pumps, power steering pump repair kits, air springs, height sensors and pressure controllers; vehicle components, namely, brake master cylinders, pressure reducing regulators, brake cylinders, brake actuators, spring brakes, hydraulic cylinders for disk brakes or drum brakes, disk brake calipers, brake pads, brake pedal valves, hand brake valves, gearboxes; air brake systems compromising valves, compressors, regulators, pressure regulators, air driers, coupling heads for air ducts, connections for parts of air braking systems, pneumatic suspension systems compromising valves, compressors, regulators, pressure regulators, air driers, suspension pads, pneumatic springs, leveling valves, coupling heads for air ducts, connections for parts of air suspension systems; gear shifts for land vehicles, master cylinders, clutch sets, clutch servo controller; all the aforesaid goods for land vehicles