Section 07 Plastics and articles thereof; rubber and articles thereof 39 Plastics and articles thereof 39 09 Amino-resins, phenolic resins and polyurethanes, in primary forms 39 09 50 Polyurethanes, in primary forms 39 09 50 00 Polyurethanes, in primary forms Commodity Code Description 39 09 50 00 00 Polyurethanes, in primary forms