The washing machine is a new type of portable service, a green, energy-efficient product, 30-50 litres of water for a car to wash, which is very easy and fast. The owner of the car is at home, in shopping, whenever and wherever he wants to wash his car during entertainment, while the washing machine is about 10 minutes away from the car wash, saves time. A self-washer is an hourly charge for a humanized service, and if the car is not dirty, it will be more economical to use the top of the self-washer at $3 or $4 to wash the car. The washing machine, which is a commercial car wash, provides both a swipe card and a deposit payment, and is properly billed to make it easier to save water and sustain development. Scratch the card or drop the money and wash the car with the pressurized water gun. The average car wash is 3-8 minutes, with an average of $4. By comparison, it is between auto-washers and small self-washers; functionally, it has the full functionality of car washes and foam machines, which are suitable for installation in small areas, parking lots, car beauty shops, garages and garages, which are common in cars such as europe and america. The free switch in the washing of cars by the washing machine of the washing machine of the washing vehicle is based on a spin button to avoid defects in previous key selection; the ad hoc stop-and-pump function, sensitivity awareness, stop-pumping, stop-calculation and more reasonable costing, while effectively protecting the problem of empty and worn pumps. Comparable money dispensers are highly secure, the currency is smooth and recognized with high accuracy and sensitivity; improved water stoppage makes the machine safer。