Just apply a colorful coat. Exterior wall coatings are used to paint the exterior walls of buildings, so the most important index is ultraviolet protection, which requires that it will not change color after long-term irradiation. Since 20 13, people have paid more and more attention to energy-saving and environmental-friendly liquid stone paint waterborne coatings. Some exterior wall coatings also require water resistance and self-cleaning. The paint film should be hard and flat, and the dirt will come off as soon as it is washed. Exterior wall coating can be used for interior wall painting because it also has water resistance; However, the interior wall coating does not have the sun protection function and cannot be used as the exterior wall coating. Paint is an ancient name; Paint, a modern name, contains more scientific and technological components and is widely used in modern science and technology and industry. But it still retains some customary names of coatings, such as latex paint, primer and topcoat.