... ISO9001 6*4 RHD 15CBM Vunuum suction Sewage Truck 1:Suction sewage truck) Suction and the car is the collection, ... USES the domestic technology brought first suction and car vacuum pump, the suction, suction ChengYuan, particularly suitable for the sewer ... device, special vacuum cleaning pump, volume gauge, network system, suction catheter things, gravity valve, vacuum tanks, communicating vessels (as ...