... . We produce ceramic knife, zirconia grinding media, ceramic valves, zirconia powder Our zirconium grinding media is made from high quality raw materials ... , structural ceramics.Specifications:Ball shape:φ0.1-0.4,φ0.4-0.6,φ0.6-0.8,φ0.8-1,φ1,φ2,φ3,φ4,φ5,φ7,φ10,φ12,φ15,φ20 ... ,φ55mmColumn shape:3×3,5×5,7×7,10×10,12×12mm zirconia Grinding media ...