According to industry experts, the main process principle of stone paper is to use professional mill equipment to grind limestone, calcite, marble, etc. into powder, and then mix stone powder with polyethylene and adhesive through a special process. It is reported that the stone papermaking technology has been successfully developed in China in the 1970s. At present, my country has a more mature stone papermaking technology with independent intellectual property rights, and its stone powder utilization rate can reach 80%.