... certification:ISO9000 3.experienced in foreign trade 4.best service High Density Abrasive Meida Specification materialpottery clay,quartz,feldspar etc.shapecylinderdiameter2. ... of ceramic media for fine polishing, porcelain polishing, light cutting, medium cutting, general cutting, fast cutting, very fast cutting and ... of workpiece and its demands for finish and brightness. High Density Abrasive Meida