... alkali. Zinc oxide as chemical additives is usually and widely used in plastic, silicate products, synthetic rubber, lubricants, paint, medicines, adhesives, food ... 2, the standard package weight: 25kg or 1000kg3, can also be packaged according to user needs ItemsContentPurity (zno)99.70 min99 ... )USES: Rubber/tyre, pharmacy, Glass, cement, Food, electronic, zinc oxide used in ceramic grade