... absorption analysisCarbonBulk purity (FTIR) on annealed ≤ 0.5ppmapolycrystalline samples.Labels on the productBulk metalsTotal of bulk ... metalsThe labels on the package contain the (Fe, ... information, please contact our sales representatives monocrystalline solar ingot,solar cells,solar panels,solar inverter,6N,9N poly ...