This is a high-precision 3D model of a tractor unit that accurately captures the rugged and powerful styling of the real vehicle. The model clearly showcases the tall cabin, broad grille and front bumper, distinctive exhaust stacks, and the intricate array of pipes and lines along the chassis. Its detailed components include the multi-leaf spring suspension, dual rows of driven wheels, and the fifth-wheel coupling, completely outlining the strength and functionality of a heavy-duty truck. Built with strict attention to proportions and structure, it is suitable for demonstrations, simulations, or visualizations, effectively presenting the core mechanical aesthetic of a tractor unit.