... FeatureSharp, wear-resisting, polishing effect is good, stable quality, good diamond,Positioning hole,Cooling holeShapeOG-2G-3G wheel, ... 320 CompanyEstablished in 1990,Zhecheng Hongxiang Superhard Material Co., Ltd is a specialized enterprise that engages in the research, ... target: Advanced technology is the basis of high-quality products. Best quality!!! ceramic resin bond diamond grinding wheel