... 7%, 99.8% to 99.9% industrial and feed grade various purity via high productivitydirect and indirect method both availableindustrial ... and feed gradeIndustrial grade:80%,85%,90%,92%,95%,96%, 97%,98 ... 99%,99.5%, 99.7%, 99.8%, 99.9%Feed grade: 72%, 75%,78.6%Min. order quantity: 22MT ... .7% pure Zinc oxide powder, industrial and feed grade