The moving tank vehicle (also known as the conveying trolley) is a kind of handling equipment that can replace traditional rollers. Its features are its small size, high load and convenient operation. When handling large equipment and far away equipment, it can save a lot of manpower and time. Some heavy equipment can be installed in place to replace the Longmen rack. The tank trucks can be used separately or with multiple units. One can carry a single load of 18 tons, and three carrying tanks are used to carry heavy equipment weighing up to 54 tons, and four carrying tanks can be used together to carry heavy equipment weighing 72 tons.