; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (188) Methoxysilanated amorphous poly alpha olefin Heading 9902.10.69 is amended— (A) by amending the article description to read as follows: Silane, ethenyltrimethoxy-, reaction products with 1-butene-ethylene-propene polymer (CAS No. 832150–35–3) (provided for in subheading 3902.30.00) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (189) Acid form dispersion Heading 9902.10.79 is amended— (A) by amending the article description to read as follows: Poly(1,1,2,2-tetrafluoro-2-[(trifluoroethenyl)oxy]ethanesulfonyl fluoride-co-tetrafluoroethylene) (CAS No. 1163733–25–2) (provided for in subheading 3904.69.50) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (190) Fluoropolymer lithium salt powder Heading 9902.10.81 is amended— (A) by amending the article description to read as follows: Poly(1,1,2,2-tetrafluoro-2-[(trifluoroethenyl)oxy]ethanesulfonyl fluoride-co-tetrafluoroethylene) lithium salt (CAS No. 1687740–67–5) (provided for in subheading 3904.69.50) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (191) Fluoropolymer, polyvinyl, ammonium salt Heading 9902.10.82 is amended— (A) by amending the article description to read as follows: Poly(1,1,2,2-tetrafluoro-2-[(trifluoroethenyl)oxy]ethanesulfonyl fluoride-co-tetrafluoroethylene) ammonium salt (CAS No. 1126091–34–6) (provided for in subheading 3904.69.50) ; and (B) by striking 12/31/2020 and inserting 12/31/2025 . (192) Electroactive polymer Heading 9902.10.83 is amended— (A) by amending the article description to read as follows: 1,1,2-Trifluoroethene-1,1-difluoroethene (1:1) (Vinylidene fluoride-trifluoroethylene copolymer) (CAS No. 28960–88–5) (provided for in subheading 3904.69.50)