Section 07 Plastics and articles thereof; rubber and articles thereof 39 Plastics and articles thereof 39 13 Natural polymers and modified natural polymers, in primary forms, nes 39 13 90 Natural and modified natural polymers, in primary forms Commodity Code Description 39 13 90 00 Natural and modified natural polymers, in primary forms 39 13 90 10 Hardened proteins 39 13 90 20 Chemical derivatives of natural rubber 39 13 90 30 Starch-based polymers 39 13 90 90 Other
