... via high productivity indirect method and direct method zinc oxide industrial and feed grade indirect method and direct method zinc oxidewe are ... . We can produce 150mts/15 days, 300mts/month, and we also have stocks and controlling 3 factories which famous in Guangxi province, China ... /T as sight or L/C. indirect method and direct method zinc, industrial and feed grade80%,85%,90%,92%,95%,96%, 97 ...