1.Adopting an integrated DONGFENG automobile pneumatic braking system, it allows trainees to understand the system's working principle and process by analyzing directions of air flows during the braking process, observing the training bench's external structure and through practice. 2.The moveable shelf is made of high-intensity steel and the surface is paint-coated. Self-retention wheels are installed to ensure that it is flexible and convenient. 3.The device applies to vehicle braking system and maintenance practical training courses of secondary and senior vocational schools, normal education and training institutions. It can fully meet the needs for automobile braking system structure working simulation and assembly and disassembly practicing. The laboratory device is multi-functional, easy to operate, and reliable.