iron oxide，purple for pharmaceutical medicinal carbon Black iron oxide (medicinal excipients) Medicinal charcoal (medicinal excipients) Purple iron oxide (medicinal excipients)

Medicinal carbon black Brown iron oxide (medicinal excipients) Yellow iron oxide (medicinal excipients) Red iron oxide (medicinal excipients) Medicinal wood activated carbon

Medicinal ink (black) (medicinal excipients) Ferric chloride,medicinal Needle, and a pharmaceutically acceptable activated reagent 783 type medicinal activated carbon Medicinal ink (yellow) (medicinal excipients)

Medicinal bleaching activated carbon iron oxide,brown for pharmaceutical White carbon black,medical