narrow particle distribution area, controllable size, magnetic, oxidation in wet air easily,2011 the best quality Application fields: Improve the property of magnetic tape, Seal suspension, wave-absorbing material, chemical agents, machinofacture,etc.Technical parametersProducts categoryTypeGrain’s average diameter(nm)Purity(%)Specificarea(m2/g)Density (g/cm3)Crystal formColorNano gradeHE-Co- ...