Usage of Sinotruk Howo 4×2 Sewage Suction Flushing Truck Sewage Removal: Powerful vacuum systems can suck up sewage, wastewater and other liquid waste. Transportation: The truck then transports this waste to treatment facilities or disposal sites for proper processing. Maintenance of Septic Systems: Routine maintenance of septic tanks in residential and commercial areas. Structure of Sinotruk Howo 4×2 Sewage Suction Flushing Truck Key …