The back base is made of PET polyester film, which enhances the damage resistance by 5-10 times, Suitable for grinding sharp edges and corners with high sharpness, quick  and effectively polish unevenness, with consistent performance at high temperatures The production process all resin adhesive abrasives ensures that no grain falls during polishing hard metal polishing operations, advantages include aircraft maintenance, rail transit manufacturing, automotive paint polishing, hardwood polishing, and composite material polishing.