Grinding welds, burrs, derusting, plane polishing, plane grinding, corner grinding, etc. High quality resin material is used as the bonding agent, and multi-layer reinforced glass fiber material is added to strengthen the product strength. It has high bonding ability, high impact, tensile and bending strength, high safety performance, strong grinding ability, high grinding efficiency, long service life, good processing effect and good hand feeling. It is suitable for stone and glass.