HS6 Subheading
391190
Polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39; in primary forms
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Other subheadings in this heading
391110Petroleum resins, coumarone, indene or coumarone-indene resins and polyterpenes; in primary forms391120Petroleum resins, poly(1,3-phenylene methylphosphonate), in primary forms391190Polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39; in primary formscurrent