... Heavy Metal ion Removal --- Fine Filtration --- Concentration --- Spray Drying --- PackingThis product contains 18 kinds of Amino Acid, especially ... Impurity Removal --- Heavy Metal ion Removal --- Fine Filtration --- Spray Drying --- PackingAmino Acid Content is higher than 40%, Pb40ppm, As10ppm ... . This product can also be applied as Spray Fertilizer, Base Fertilizer, or Ground Fertilizer directly ...