... and exporter of zinc oxide, direct method,95%,98%,99%, indirect method 99.7%,99.8% speciallized manufacturer and exporter of zinc oxide ... , direct method,95%,98%,99%, indirect method 99.7,99.8% for rubber,PHARMItemStandard(GB/T3494-1996 (%)Zinc ... oxide%99.0min.Lead oxide(Pbo)%0.20max.Cadmium oxide (Cdo)%0.05max.Copper Oxide(Cuo)%0.006maxMangaese(Mn ...