How can car wash will not affect the paint

Vehicle dirty on the cleaning. Cleaning the right way, tend to damage the paint. So, what vehicle washing is more reasonable it?
        Such as in rain road driving, paint adhesion of dirt thick, such as clear with a gun, a basin of water will tune into a mist, the whole car jet wet wait a moment, and then spray tune into a water hybrid-like re-rinse. Then dedicated car wash detergent from top to bottom with a towel or sponge dipped in to smear the car again, then and then the gun tune into mist, the Moqi dirt washed away, finally used a towel wrung water retention rub dry.
        If the body is not too dirty, car wash, it is best not to spray on them. Directly with tap water, the body from top to bottom will be wet, then towel or sponge in accordance with the direction of flow, from top to bottom graze once the graze to a large amount of water, the portrait launch just one direction, not back and forth push and pull, so as to avoid the buildup of sand on a towel or sponge strain paint. Then rinse with water once, and finally wrung towel to dry the water retention.
        If the body of the vehicle is just bashing the dust, and not difficult to remove stains, it is best not to water car wash, fuel and ammunition just brick, to sweep the dust production can be.
The car wash also should pay attention to the following points:
        Avoid the use of high-pressure water jets vigorously rinse the front and rear doors and windows and side windows.
        2 not in the hot car, car wash live under the hot sun.
        3 each time water car wash, be sure to paint on the traces of water clean.
        4 usually can not use chemical solvents or strong detergent washing.
        5 water is difficult to wash off the stains, not local hard fierce rub, as the case may be, takes a different approach.
        6 is a car wash with a cloth or sponge, water consumption, we must act in the direction of flow from top to bottom, as much as possible the sand washed away.