China is a large country in the production and consumption of coatings. However, currently domestic coatings generally suffer from performance deficiencies, such as poor suspension stability, poor thixotropy, poor weather resistance, and poor scrub resistance, which leads to the need to import a large amount of high-quality coatings every year. Some coating manufacturers in Shanghai, Beijing, Hangzhou, Ningbo and other places dared to innovate and successfully realized the application of fumed silica in coatings. This nano-modified coating has changed the deficiencies of previous products and tested its main performance indicators. Except that the contrast ratio is unchanged, the rest have been greatly improved. For example, the scrub resistance of exterior coatings has been increased from more than 1,000 to more than 10,000. The artificial accelerated weathering and artificial radiation exposure aging time has been changed from the original 250 hours ( Powder level 1 and discoloration level 2) increased to 600 hours (no chalking, no change in color of paint film, color difference value of 4.8), in addition, the bonding strength of the coating film and the wall has been greatly improved, the hardness of the coating film has increased significantly, and the surface self-cleaning ability Also improved.