Dear Sir:Please send your FOB offer for the following:SPECS REQUIREMENT FOR IRON PYRITERequirementFe >40.0%S >40.0%Cu >1.0%ZnO <0.08%As <0.1%Pb <0.1%Hg <0.01%F <0.1%Cd <0.05%K2O <0.1%Na2O <0.1%Al2O3 <0.5%TiO2 <0.1%SiO2 <5%Fe+S >80% Cu<1% without charge K2O+ Na2O <0.2% Show More