Poly(1,1,2,2-tetrafluoro-2-[(trifluoroethenyl)oxy]ethanesulfonyl fluoride-co-tetrafluoroethylene) SO2F form (CAS No. 69462-70-0) (provided for in subheading 3904.69.50)
Part of: 99 — Temporary legislation; temporary modifications (US)
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