We produce :- manganese dioxide 6000 mt per annum.- manganous oxide1800 mt per annum.- manganese sulphate1200 mt per annum production specification : manganous oxidemanganous oxidecommodity manganous oxide mno 70.00 75.00% 75.00 -77.50% 77.50- 80.00% 80.00 -84.00% mn 54.00-58.00% 58.00-60.00% 60.00-62.00% 62.00-64.00% fe 8.00% max 6.00% max 5.50% max 5.00% max sio2 6.00% max 4.00% max 3.50% max 3.00% max