This U.S. industry comprises establishments primarily engaged in manufacturing industrial trucks, tractors, trailers, and stackers (i.e., truck-type) such as forklifts, pallet loaders and unloaders, and portable loading docks. Manufacturing motor vehicle-type trailers--are classified in U.S. Industry 336212, Truck Trailer Manufacturing; Manufacturing farm-type tractors--are classified in U.S. Industry 333111, Farm Machinery and Equipment Manufacturing; and Manufacturing construction-type tractors--are classified in Industry 333120, Construction Machinery Manufacturing.