HS CodesVII · Plastics and articles thereof; rubber and articles thereof39 · Plastics and articles thereof3902390220390220Chapter 39Copy pagePolyisobutyleneDescriptionPolymers of propylene or of other olefins, in primary forms : PolyisobutyleneWas this page helpful?YesNoPrevious390210PolypropyleneNextPropylene copolymers390230