A series of urban problems caused by the acceleration of urban process and the surge of urban population but the relatively lagging infrastructure construction. Such as sewage treatment, landfill, cleaning, and so on, and to deal with these problems, but also greatly increased the work of environmental workers. But many of China's sanitation workers are middle-aged and elderly, which increases the burden on these vulnerable groups. The emergence of electric sanitation vehicles, to these groups greatly reduce the burden. It also contributes to the improvement of the city's environmental quality.

Chang yun has developed AB3 two-gear rear axle for this series of products, suitable for both driving and working. Matching back bridge:

Open rear bridge:AB3-160J；

Matching motor:800w-1200w brushless dc motor

Controller:18-24 tube controller 40-60a