;1RS,3SR)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate (β-Cyfluthrin) (CAS No. 68359–37–5) (provided for in subheading 3808.91.25) Free No change No change On or before 12/31/2020 . 815. Tetrachlorvinfos Formulations Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.09.26 Product mixtures containing (Z)-2-chloro-1-(2,4,5-trichlorophenyl)vinyl dimethylphosphate (Tetrachlorvinfos) (CAS No. 22248–79–9) (provided for in subheading 3808.91.25) Free No change No change On or before 12/31/2020 . 816. Mixtures of clofentezine Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.09.27 Mixtures of 3,6-bis(2-chlorophenyl)-1,2,4,5-tetrazine (Clofentezine) (CAS No.74115–24–5) and application adjuvants (provided for in subheading 3808.91.25) Free No change No change On or before 12/31/2020 . 817. Acequinocyl Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.09.28 Mixtures of 3-dodecyl-1,4-dioxo-1,4-dihydronaphthalen-2-yl acetate (CAS 57960–19–7) (Acequinocyl) and application adjuvants (provided for in subheading 3808.91.25) Free No change No change On or before 12/31/2020 . 818. Flonicamid Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.09.29 N-(Cyanomethyl)-4-(trifluoromethyl)-3-pyridinecarboxamide (Flonicamid) (CAS No. 158062–67–0) (provided for in subheading 2933.39.27) and any formulations containing such compound (provided for in subheading 3808.91.25) Free No change No change On or before 12/31/2020 . 819. Gamma-cyhalothrin formulations Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.09.30 Mixtures containing Cyano(3-phenoxyphenyl)methyl 3-[(1Z)-2-chloro-3,3,3-trifluoro-1-propen-1-yl]-2,2-dimethylcyclopropanecarboxylate (gamma-cyhalothrin) and application adjuvants (CAS No. 76703–62–3) (provided for in subheading 3808.91.25) Free No