Vacuum suction truck (also known as vacuum suction truck) is a special vehicle based on the modification of Class II automobile chassis, which generates negative pressure through a vacuum pump to suck liquid/semi liquid pollutants such as sludge, sewage, manure, industrial waste, etc. from the ground or underground into sealed tanks, achieving long-distance transportation and fixed-point discharge. Its core positioning is the integration of "waste collection sealed transportation centralized treatment", which solves the pain points of low efficiency and secondary pollution caused by traditional manual cleaning. It is the core equipment for municipal sanitation, environmental engineering, and property cleaning.