What are cleaning vehicles, manhole dredging vehicles and municipal sewage suction vehicles?

Dredger is a special vehicle, but it is still a vague term. At present, dredging vehicles are basically divided into domestic and imported. The imported ones are American Vakdo series road dredging vehicles (the only car dredging vehicles entering the China market), and the domestic ones are divided into bucket dredging vehicles and spiral dredging vehicles. Bucket dredger is developed and produced by an enterprise in Jilin Province, which is characterized by simple structure and can simply replace manual dredging. The operation is slow, and it is difficult to popularize now. Another kind of spiral dredging vehicle is developed and produced by an enterprise in Nanyang. It is the most advanced spiral dredging vehicle in China and the only patented dredging vehicle in the world. Its technology is independent and its dredging method is unique. It abandons the traditional dredging concept and adopts advanced spiral dredging technology, which is the most popular dredging vehicle product on the market at present.