In the special-purpose marine project that integrates logistics and equipment manufacturing, SIASUN Heavy-Duty Mobile Robot plays a key role. The project requires a large number of oversized and overweight cargo handling and assembly. Traditional methods are full of problems. Ordinary equipment is difficult to bear the load, and the transportation stability and positioning accuracy are poor. The efficiency is low and the cargo is easily damaged. SIASUN robots have strong load capacity and stable control. High-precision positioning during assembly solves the problems of low precision and high rework, ensuring high-quality delivery. Intelligent navigation plans routes, avoids obstacles and utilizes space, ensures the efficiency and stability of the project, and sets a benchmark for the intelligentization of heavy-duty logistics.