The most fundamental purpose of car washing is to remove stains from the car. Washing with clean water is definitely not acceptable. What to wash the car with is too particular. At present, car washing detergents used in car washing shops can be basically divided into three types: washing powder, detergent and special car washing liquid. A car owner went to the car wash shop and saw that the staff washed it seriously and the foam was flying all over the sky. The ability of "cleaning and decontamination" is quite strong, and dirty cars seem to be no problem. After washing, it looks clean from the outside. If you want to know what the car wash shop uses, you can pinch it with your fingers and smell those bubbles and washing powder with your nose! Yes, some car wash shops just wash cars with washing powder.
Washing powder is an alkaline detergent, which is very harmful to car paint. If you wash the car with washing powder for a long time, the surface of the car will gradually lose its luster. The corrosion of washing powder on car paint is difficult to see in a short time, so many car owners don't know how serious it is. The owner of the car wash shop knows that washing powder will destroy the car, why use it? The fundamental reason is that the cost of washing powder is low and the effect is quick. Some car wash shops use detergent to wash cars. Shopkeepers usually buy vats of detergents, similar to those used in the catering industry. Although this detergent is only tens of yuan cheaper than special car wash liquid, it is still widely used in car wash shops.
The owner of a car beauty shop said: "The special car wash liquid is neutral and won't damage the car paint, but the price is slightly more expensive than the detergent. Now the water fee is getting more and more expensive, and the profit of car washing is getting lower and lower, so stores are doing everything possible to reduce costs. " The boss also revealed a trick to distinguish, that is, look at the hand of the car washer when washing the car. If the car washer's hands are white, it proves that there is something wrong with the car wash fluid he uses, and he washes the car with alkaline detergent for a long time.
The water flow in the car wash is also very skillful.
From the appearance, car washing is just a simple manual labor, and there seems to be no skill, but the water flow of car washing is also very particular. A professional car wash shop will never spray it with a high-pressure water gun as soon as it comes up. Generally, the water must flow slowly for the first time, rushing from top to bottom, and taking away the dust particles on the car with water. If we start with a high-pressure water gun, it is equivalent to letting dust particles do "friction movement" on the surface of car paint.
Sometimes, in order to save trouble, car owners often wash their cars in roadside shops. Those who wash cars with buckets, if you look closely, will find that there is a lot of sediment in their buckets, which is no different from sandpaper cleaning cars. Some towels used in car wash shops are also eliminated in hotels. This kind of towel looks very new and white, but it is actually rough and harmful to the car.
Wash the car, be careful not to stab the car.
Due to the rising cost of urban water, car washing is no longer a separate income, and many car beauty shops and garages use car washing as an auxiliary project. Some car owners drove their cars to the garage, but the tires were flat after washing. People know there is something fishy, but they just can't know the truth. An employee who once worked in a repair shop told the author the inside story.
In some repair shops, in order to attract more business, car owners secretly let car washers puncture their tires when washing their cars. The tools for tying cars are generally sharpened iron wires hidden on cleaning cloth.
It is understood that car washing is divided into three parts: washing the car with a water gun is the first step; Step 2, use car wash liquid; Step three, scrub the car interior. I will not do the first two steps. When I was washing the car, people would surround me, and my sight was blocked, so I started to tie the car. They usually choose the right side of the car, because the driver is on the left side of the car and stands on the left side after getting off the bus, so that the tire on the right side is not easy to be found, and the sound of the vacuum cleaner is loud enough to cover the sound of deflation.