The built-in car tailboard is also called the built-in car lifting tailboard, the built-in car loading and unloading tailboard, the built-in lifting tailboard, and the built-in hydraulic car tailboard. It is a kind of hydraulic lifting and unloading equipment that is installed in the truck and various vehicle boxes and powered by the on-board battery. It can greatly improve the transportation and handling efficiency, save costs, and is one of the necessary equipment for modern logistics transportation. The built-in car tailboard has all the features of the external car tailboard, which is free of disassembly and loading during the annual inspection. Regular specifications of 0.5t, 1t, 1.5t, 2t, 2.5t can be customized. The tailboard is mostly installed and fixed on the car body with a suspended support with four oil cylinders through a hanging plate. After the car door is opened, the tailboard surface is controlled from vertical - backward turned to the level of the plate - down to the ground - downward inclined to the front end of the plate to fit the ground, and then the truck is loaded and unloaded. The whole process can be operated by one person. Safe and convenient. The feature of the built-in tailboard is that it is hidden inside the compartment, which is convenient for the annual review of vehicles.