Hand-ground paper is used for folk sacrificial activities, or as paper money to burn to the dead when mourning their loved ones. According to relevant data, paper grinding refers to the use of ultra-precision coating technology to evenly disperse selected micro or nano grinding powders (diamond, silicon carbide, alumina, silicon oxide, cerium oxide, etc.). ) and high-performance adhesive, then coating it on the surface of high-strength PET polyester film, and then processing it by high-precision cutting technology.