... %~99.5% - Indirect ZnO 99.9%~99.7%, etc. - Feed Grade ZnO 75%~65%, etc. - Calcined ZnO 99 ... 222-5Place of Origin: Guangxi China (Mainland)Grade Standard: Agriculture Grade, Electron Gra...Purity: 80~99.9% ... %~99.5% - Indirect ZnO 99.9%~99.7%, etc. - Feed Grade ZnO 75%~65%, etc. - Calcined ZnO 99 ... Process Zinc Oxide, Calcined Zinc Oxide, Feed Grade Zinc Oxide, Pharmaceutic Zinc Oxide, nanometer Zinc ...