... materials manufacturer. We produce ceramic knife, zirconia grinding media, ceramic valves, zirconia powder Our zirconium grinding media is made from high quality raw ... , steel balls, agate balls and glass pearls, zirconia grinding mediumY-TZP grinding medium)has high density, high hardness ,high tenacity ... ,φ3,φ4,φ5,φ7,φ10,φ12,φ15,φ20,φ55mmColumn shape:3×3,5×5,7×7,10×10,12×12mm zirconia Grinding media