Diamond polishing block 1.Excellent Shaping Effect 2.Good Sharpness 3.Long working lifespan 4.OEM Aceepted Diamond polishing blockWe are a factory,established 20 years ago. Widely polishing use, good grindking ability. Long working lifespan. OEM Aceepted.Diamond polishing Block Applicable for polishing of granite,marble and other stones.High efficiency,long working life,and perfect polishing. ...