Flap disc is commonly used in portable polishing machines and sanding machines, and is an increasingly popular light running litter box. The grinding quality is stable and does not burn workpieces, especially for sheet metal of small specifications or stainless steel that needs polishing. These new litter box are not only strong but also safe. Since there is no back base disk, it can also be directly used on the machine. It is divided into grid page plate, high-strength plastic cover page plate and steel paper page plate, which are widely used in automobile manufacturing, shipbuilding, mold, instrument, instrument, medical equipment and Other Grinding, polishing, trimming and other technological processes. Rust removal, high efficiency of modification and polishing, and consistent with various complex surfaces, mainly used for manual machine polishing