... ) Purity:99.7% & 99.5% 3) Use: Rubber,Food , Chemicals... 4) Packing: 25kg 5) ISO9001 Zinc oxide ( ... ZnO), commonly known as zinc ... batteries, flame retardants and other relevant fields. Zinc oxide has large bandgap and exciton binding energy, ... pharmacy, Glass, cement, Food, electronic, Zinc Oxide 99.7% 99.5% (manufature)