Section 07 Plastics and articles thereof; rubber and articles thereof 39 Plastics and articles thereof 39 11 Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, polysulphones and other products specified in Note 3 to this Chapter, not elsewhere specified or included, in primary forms. 39 11 20 Poly(1,3-phenylene methylphosphonate) Commodity Code Description 39 11 20 00 Poly(1,3-phenylene methylphosphonate)