We are currently marketing and selling LEAD SULFUR CONCENTRATE (PbS) from IRAN with various concentration levels ranging from 57% to 86% and with a SULFUR content of 11% up to 15% and a ARSENIC (As) level of less than 0.001, also for a complete ANALYSIS of contact us ; furthermore we accept L/C and T/T as our payment terms. SAMPLE can also be provided to verify our ANALYSIS claim. We can quote you based on FOB, CNF , and CIF. Our M.O.Q. for this product is 25 Metric Tons and up to 1000 Metric Tons per Month.