The tractor (or tractor unit) is a central power vehicle in the fields of road logistics, port transportation, and material transfer. It is primarily used for towing semi-trailers, full trailers, containers, and bulky equipment, thereby fulfilling functions such as long-distance transport, short-distance trips, and heavy-load transportation. The products include fuel-powered tractors, natural gas tractors, new-energy electric tractors, and hydrogen-powered tractors, offering features such as high power, fuel efficiency, safety and comfort, reliability, and great adaptability. These equipment are a key component of the modern logistics transportation system.