The car follows the humanized design concept in the vehicle layout, mechanism design and vacuum system design, and has carried out strict program optimization; the supporting parts and components are selected from the products of well-known domestic manufacturers; and the domestic design is integrated and absorbed in the entire design process. Advantages of similar models outside. Therefore, the technical performance of this model has reached the international advanced level, and it is in a leading position in China. It has been widely used in rural biogas digesters, rainwater wells, inspection wells, sedimentation wells, sewage, biogas residues, manure and other urban and rural liquid waste treatment in various channels, as well as the extraction, shipment, and discharge of sewage sludge in oil plants.