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Hello. I'm Elena. Company VEGA Prime, Moscow. We are interested in Cobalt metal (ingot or cathode) brand K1AU. Method of manufacture: the electrolysis or fire refining. Chemical composition of cobalt brand K1AU %: Cobalt, not less than 99.35 Impurity, not more: Aluminum: ____ Bismuth: 0.0004 Iron: 0,2 Cadmium: 0.001 Silicon: _____ Manganese: 0.03 Copper: 0.02 Arsenic: 0.001 Magnesium: ____ Nickel: 0.3 Tin: 0.0004 Sulfur: 0.004 Antimony: 0.0006 Lead: 0.0005 Carbon: 0.02 Phosphorus: 0.003 Zinc: 0.002 We are interested in the price per kg. thank you in Advance for your prompt response. Best Elena