The color plate independently developed by Zhong Minyou has high density, high strength, high weather resistance and ultra-low water absorption. As the skin of the building exterior wall, its service life exceeds that of the building matrix, which can prevent the wall from cracking, warping and falling off, and realize the maintenance-free life cycle. The thermal insulation effect is very good, which is 4- 10℃ lower than that of ordinary board in summer, and the problems of heat transfer and thermal bridge are also solved. The manufacturing process is low-carbon and energy-saving, and the cement consumption per unit area is about 60% less than that of the sandwich concrete wall; Excellent fire resistance. At the same time, the surface has the "self-cleaning effect" and photocatalytic purification function similar to lotus leaves. It can be called "perfect" skin for a hundred years.