... factory99%,99.5%,99.7% Industry grade,Feed grade,Ceramics grade Use:Rubber,Food,Industry high purty and good price Zinc Oxide factory 99%,99.5%,99.7%1 ... ZnO 99% 99.5% 99.7% MnO ≤ 0.001% >0.0005% 0.0004% PbO ≤ 0.15% 0.05% 0.037% CuO ≤ 0.001% 0.0005% 0.0004% Heat Loss ≤ 0.3% 0.3% 0.3 ...