... rubber and latex vulcanization active agents and reinforcing agents, as well as coloring agents. In the chemical industry, zinc oxide is widely used ... outer polypropylene woven bag, 25kg, 50kg, big sack bag Zinc Oxide Grades : Indirect process Zinc Oxide, Direct Process Zinc Oxide, Calcined Zinc Oxide, Feed Grade Zinc Oxide, Pharmaceutic Zinc Oxide, nanometer Zinc Oxide, etc.