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 isotopes2841284190284190Chapter 28Copy pageOtherDescriptionSalts of oxometallic or peroxometallic acids : OtherWas this page helpful?YesNoPrevious284180Tungstates (wolframates)NextDouble or complex silicates, including aluminosilicates whether or not chemically defined284210