This Tri-Axle 3-Deck Aluminum Livestock Semi-Trailer is professionally manufactured for long-distance transportation of live animals. The whole cargo box adopts lightweight high-strength aluminum alloy, much lighter weight than carbon steel models. Equipped with hydraulic adjustable decks, it can switch freely between 2 layers and 3 layers. Large-area ventilated mesh side panels and full set of water spray cooling system greatly improve survival rate of pigs, cattle, sheep, chickens, ducks and other livestock during long haul. Widely used in farms, slaughterhouses and inter-provincial agricultural logistics. Brand marked LUEN AUTO, mature craft and legal for license registration.