Dear Sir As serious buyer we are interesting to import copper concertrate ore 25% min from abroad per month . Please note that main parameters demand as belows : Cu 25% min S 18% min As 0.01% max Cd 0.01% max Hg 0.01% max F 0.05% max Pb 4% max MgO 1.2% max Size : -200mesh 90% min Inspection of quality issued by SGS at loading port . Payment by prepaid or DLC from prime bank . Please send available offer if interesting items.