πŸ‡ΊπŸ‡Έ United States

3911903500

1,1'-Bis(methylenedi-4,1-phenylene)- 1H-pyrrole-2,5-dione, copolymer with 4,4'-methylenebis(benzeneamine); and Hydrocarbon novolac cyanate ester

Details

Parent HS6
391190 Polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39; in primary forms