Color coated galvanized sheet has been widely used in daily life. In different areas and different parts of use, the service life of color galvanized sheet with the same amount of zinc plating will be very different, so what causes itIn industrial areas or coastal areas, due to the action of sulfur dioxide gas or salt in the air, the corrosion rate is accelerated and the service life is affected. In rainy season, the coating will be corroded quickly and its service life will be reduced if it is soaked by rainwater for a long time, or if the temperature difference between day and night is too large and easy to condense. Buildings or factory buildings made of color coated galvanized sheet often have a long service life when washed by rainwater, otherwise, they will be affected by sulfur dioxide gas, salt and dust. Therefore, in the design, the larger the inclination of the roof, the less likely it is to accumulate dirt, such as dust, and the longer the service life; for those areas or parts that are not frequently washed by rainwater, they should be washed with water regularly. In order to avoid corrosive interference, the storage ground should be flat and have enough bearing capacity. In addition to some different types of color coated galvanized steel plate is not suitable to be directly placed on the ground, it should be placed on the rubber pad or bracket device. The storage place must be dry and ventilated, and the location shall be selected to reduce the movement as much as possible.