HS CodesVI · Products of the chemical or allied industries28 · Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes2819281990281990Chapter 28Copy pageOtherDescriptionChromium oxides and hydroxides : OtherWas this page helpful?YesNoPrevious281910Chromium trioxideNextManganese dioxide282010