We are offering copper cathodespecifications commodity: copper cathode type: grade a purity: purity 99.99%-99.97% min technical analysiselement sign maxsilica si 0, 3ppmcobalt co 0, 5ppmlead pb 0, 5ppmiron fe 2, ppmnickel ni 0, 5ppmantimony sb 0, 5ppmarsenic as 0, 1ppmbismuth bi 0, 5ppmtellurium te 0, 5ppmsilver ag 10, ppmselenium se 0, 5ppmsulphur s 4, ppmoxygen o2 0, 00ppmaluminum al 0, 5ppmmanganese mn 0, 5ppmmagnesium mg 0, 5ppm.