... %, etc. - Feed Grade ZnO 75%~65%, etc. - Calcined ZnO 99.5%, etZinc Oxide Grades: Indirect process Zinc Oxide, Direct Process Zinc ... , nanometer Zinc Oxide, etc.Property: White powder, odourless, relative density 5.606, stable under normal temperature. Insoluble in water and alcohol ... bag, 25kg, 50kg, big sack bag or as required by the customerDirect process zinc oxide quality meet standard of GB/T3494 ...