Section 07 Plastics and articles thereof; rubber and articles thereof 40 Rubber and articles thereof 40 05 Compounded rubber, unvulcanized, in primary forms or in plates, etc 40 05 99 Natural rubber compounded with substances other than carbon or silica 40 05 99 20 Natural rubber compounded with substances other than carbon or silica Commodity Code Description 40 05 99 20 00 Natural rubber compounded with substances other than carbon or silica
