Subheading 391110: Petroleum Resins, Coumarone, Indene or Coumarone-indene Resins … etc.
Subheading 391120: Petroleum Resins, Poly(1,3-phenylene Methylphosphonate), in Pri … etc.
Subheading 391190: Polysulphides, Polysulphones and Similar Products of Chemic … etc.