... loss of ball lee of 4ppm,High density, grinding efficiency,No impurity,keep the material high degree of purity.Main Use:Electronic ... material (Such as BaTiO3,BaCO3),Magnetic bands superfine grinding,Paint,pigment, ... sand millØ5-20mm Grinding ball use in mix mill and ball millOverØ20mm Grinding ball use in ball mill Zirconia grinding media balls