The upper part is a tank body. The clean water tank is 2.5 square meters and the sewage tank 5.5 square meters is equipped with high-pressure water pumps. High-pressure pump models: 3DS- 8/16, GYB-8/16, pressure: 16-19Mpa, flow: 8m3/h, hose length: 60m, coiling force: 1800 N, hose inner diameter: φ19 mm, joint type: 0, coiling speed: 0-25m/min, hole clamping angle: 15°, 25°, thrust: ≥180 N.