Chongqing exterior paints are mainly used outdoors, and their coatings are exposed to the atmosphere. They are affected by changes in sunlight, rain, sand, cold and heat. Under these external effects, the coating is prone to cracking, chalking, flaking, discoloration, etc., causing the coating to lose its original decorative and protective functions. Therefore, as an exterior wall coating, the coating requirement does not occur within a prescribed time, that is, it has good weather resistance. In general, environmental pollution is relatively serious, and there are many suspended solids such as dust in the atmosphere, which tends to contaminate the paint. Therefore, the paint will lose its decorative effect and become completely different, seriously affecting the appearance of the building. Therefore, it is required that the decorative coating on the outer wall is not easily contaminated by these substances or easily removed after contamination. The performance requirements of exterior paints are higher than those of interior walls, and the interior walls can be painted with exterior walls. Since the price of exterior paint is higher than that of interior paint, consumers generally do not use it. However, sometimes the requirements for interior wall coatings are more stringent or special, and exterior wall paints, such as bathrooms, bathrooms, kitchens, etc., can be used to make them more gorgeous. Fading of exterior paint is a common problem. The slow fading of high-quality exterior paint does not mean that it never fades. Therefore, it is generally recommended that the exterior wall paint be darker or darker. On the one hand, the building is calm and generous. On the other hand, the dark color is usually composed of inorganic pigments. The weather resistance of inorganic pigments is better than that of organic pigments, and the fading is slower. In addition, the same building should use the same batch of paint to ensure consistent color. The paint construction of the building should be carried out from top to bottom. Each paint should be bounded by a partition wall, a wall intersection of the yin and yang, or a downpipe.