The Grey color Lead oxide is also known lead sub oxide, grey oxide and battery oxide. The Grey Oxide is produced in ball mill plant & the process is an exothermic reaction. The chemical formula of Lead sub oxide is (2PbO.Pb).Grey Oxide is using on an extensive scale for preparation of plates in Lead Acid Storage Batteries which requires production to strict specifications. Refined Lead (99.98% purity) ingots are the essential input for our manufacturing plant, which is using in the ball mill process.