... no doubt it is becoming a leading mobile car wash model. With a such a device, the owner has a rent-free washing shop and ... of water for a car, save water 80% compared to the traditional car washing way; 6,Pressure adjustable;7,12V Battery for power supply ... of water for a car, save water 80% compared to the traditional car washing way; 6,Pressure adjustable;7,12V Battery for power supply ...