Heavy duty is a remarkable feature of the development of the obstacle removal vehicle technology. With the adjustment of China's heavy truck tonnage, the construction of China's western development, South to North water and West to East gas transmission, the spread of the Olympic construction and the start of the construction of the Shanghai World Expo, the improvement of road conditions, the development of the transportation industry, and the development of highway transportation towards high-speed, intensive, specialized and containerized, will inevitably lead to the rise of the heavy truck industry (including dedicated heavy trucks). As an obstacle removal vehicle to ensure smooth roads, non condensing vehicles must also be heavy-duty to meet the needs of heavy vehicles for obstacle removal.