Plastic grinding stones (resin stones, plastic stones) are surface treatment abrasives used for deburring, edge removal, chamfering, descaling, and rust removal after stamping, die-casting, or sheet metal processing of materials such as aluminum alloy, zinc alloy, and copper. They are commonly applied in pre-plating fine grinding for furniture hardware (e.g., handles, locks) and hardware accessories like bag buckles, zipper pulls, and shoe buckles. Plastic grinding stones mainly come in three shapes: cone, equilateral triangle, and cylinder. Users can select the specifications of plastic grinding stones based on the shape and size of the product.