Cerium oxide is an extremely effective polishing compound because it can polish glass in both chemical decomposition and mechanical friction forms simultaneously. During the polishing process, cerium oxide polishing powder has two functions, namely mechanical action and colloidal chemical action, which occur simultaneously. So cerium oxide polishing powder has the advantages of strong cutting force, short polishing time, long service life, and high polishing accuracy. Therefore, it has been widely used in the polishing of industrial products, such as polishing various optical lens glasses, eyeglass lenses, flat glass, process glass, mobile phone screen glass, semiconductor chips, and metal precision products.