1)zinc powder high quality Zn 99%, 100mesh to 800 mesh 2) factry price 3)OEM 4)good service ... and alkali. It is a kind of strong reducer, easy to react with acid & alkali, and give out hydrogen at the ... (%)NO LESS%NO MORE%Total zincMetal zincPbFeCd9997.50.050.050.10 According to your demands, we offer 80mesh, 120mesh, 200mesh, 400mesh, 500 ...