Section 07 Plastics and articles thereof; rubber and articles thereof 39 Plastics and articles thereof 39 20 Other plates, sheets, film, foil and strip, of plastics, non-cellular and not reinforced, laminated, supported or similarly combined with other materials. 39 20 30 Of polymers of styrene 39 20 30 00 Of polymers of styrene Commodity Code Description 39 20 30 00 000 Of polymers of styrene