Section 07 Plastics and articles thereof; rubber and articles thereof 40 Rubber and articles thereof 40 02 Synthetic rubber derived from oils, in primary forms or in plates, etc 40 02 39 Halo-isobutene-isoprene rubber Commodity Code Description 40 02 39 00 Halo-isobutene-isoprene rubber 40 02 39 10 Unvulcanised, uncompounded plates, sheets or strip 40 02 39 90 Other
