1.Zinc oxide 2.Indirect/direct process 3.99.7%,99%,95%,90% ... 5.Red/Bule process 1.Zinc oxide 2.Indirect/direct process 3.99.7%,99%,95%,90%4. ... process Zinc Oxide Grades : Indirect process Zinc Oxide, Direct Process Zinc Oxide, Calcined Zinc Oxide, Feed Grade Zinc ... Residue%----------------------------0.2Max105°Cvolatile ---------------------------------0.5max Indirect/Direct /red process Zinc oxide