Section 07 Plastics and articles thereof; rubber and articles thereof 39 Plastics and articles thereof 39 21 Other plates, sheets, film, foil and strip, of plastics 39 21 19 Plates and sheets of hardened proteins, or of chemical derivatives of na 39 21 19 50 Plates and sheets of hardened proteins, or of chemical derivatives of na Commodity Code Description 39 21 19 50 00 Plates and sheets of hardened proteins, or of chemical derivatives of na
