Agriculture Grade, Industrial Grade Specifications1) manganese oxide 60% to 99% 2) Professional services and ... ferrite, drier of coating and varnish, catalyst, feed aids, trace element fertilizer, or used in medicine, smelting, welding, reducing printing-dyeing of ... bag (export packing), Net wt 25kg, 1000 kg. Storage: Kept in cool and dry place. Avoid moisture. Do not mix with ...