High Purity Leads:Pb-05 Grade 99.999. The content of Leads is above 99.999%. The total content of Ag, Al, As, Bi, Cd, Cu, Fe, Mg, Ni, Sb, Sn & Zn is bellow 10 ppm;Uitra Purity Leads:Pb-06 Grade 99.9999. The content of Leads is above 99.9999%. The total content of Ag, Al, As, Bi, Cd, Cu, Fe, Mg,...