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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General 1-Propene, 1,1,2,3,3,3-hexafluoro-, oxidized, polymerized, reduced, hydrolyzed (CAS No. 161075-14-5) (provided for in subheading 3904.69.50).............................................................. 1/ 9902.10.91 On or before 12/31/2020 No change No change Free 1/ Ethene, 1,1,2,2-tetrafluoro-, oxidized, polymerized, reduced, methyl esters, reduced, 2,3-dihydroxypropyl ethers (CAS No. 925918-64-5) (provided for in subheading 3904.69.50).......... 1/ 9902.10.92 On or before 12/31/2020 No change No change Free 1/ Polyperfluoroethoxymethoxydifluoroethyl polyethylene glycol ether (CAS No. 88645-29-8) (provided for in subheading 3904.69.50)................................................................................... 1/ 9902.10.93 On or before 12/31/2020 No change No change 2.1% 1/ Methoxycarbonyl-terminated perfluorinated polyoxymethylene-polyoxyethylene (CAS No. 107852-49-3) (provided for in subheading 3904.69.50)................................... 1/ 9902.10.94 On or before 12/31/2020 No change No change Free 1/ Ethene, tetrafluoro, oxidized, polymerized, reduced, methyl esters, reduced, ethoxylated (CAS No. 162492-15-1) (provided for in subheading 3904.69.50) ................................................... 1/ 9902.10.95 On or before 12/31/2020 No change No change Free 1/ Mixtures of 95 percent perfluoropolyether polyethoxy alcohol (CAS No. 1260733-08-1) and 5 percent 2,2'-[oxybis(2,1-ethanediyloxy)]diethanol (Tetraethylene glycol) (CAS No. 112-60-7) (provided for in subheading 3904.69.50)................................................................................... 1/ 9902.10.96 On or before 12/31/2020 No change No change Free 1/ 1-Propamine, 3-(triethoxysilyl)-, reaction products with Etesters of reduced polymd. oxidized poly(tetrafluoroethylene) (CAS No. 223557-70-8) (provided for in subheading 3904.69.50) ........................................................................................................ 1/ 9902.10.97 On or before 12/31/2020 No change No change Free 1/ Poly(vinyl acetate), of a kind used in food preparations (CAS No. 9003-20-7) (provided for in subheading 3905.19.00)....... 1/ 9902.10.98 On or before 12/31/2020 No change No change Free 1/ Poly(vinyl acetate-co-crotonic acid) (CAS No. 25609-89-6) (provided for in subheading 3905.19.00)................................... 1/ 9902.10.99 On or before 12/31/2020 No change No change Free 1/ Ethylene-vinyl acetate copolymers (other than those in aqueous dispersions), containing 50 percent or more by weight of vinyl acetate monomer (CAS No. 24937-78-8) (provided for in subheading 3905.29.00).............................................................. 1/ 9902.11.01 On or before 12/31/2020 No change No change Free 1/ Polyvinyl formal resin (ethenol; [(ethenyloxy)methoxy]ethene (CAS Nos. 63450-15-7, 63148-64-1, and 9003-33-2) (provided for in subheading 3905.91.10) ................................................... 1/ 9902.11.02 On or before 12/31/2020 No change No change Free 1/ Aqueous mixtures of poly(vinyl alcohol) (CAS No. 110532-37-1) and poly(vinylpyrrolidone) (CAS No. 9003-39-8) (provided for in subheading 3905.99.80) ......................................................... 1/ 9902.11.03 On or before 12/31/2020 No change No change Free 1/ 1/ See chapter 99 statistical note 1. Rates of Duty 1 Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - II - 85 Note:The shaded areas indicate the provision has expired