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 31 - - Poly (methylene phenyl isocyanate) (crude MDI, polymeric MDI) Commodity Code Description 39 09 31 00 - - Poly (methylene phenyl isocyanate) (crude MDI, polymeric MDI)