... %, 99.7%, 99.8% to 99.9% industrial and feed grade various purity via high productivitydirect and indirect method both availableindustrial ... and feed grade Industrial 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 for 20 ...