;1RS,3SR)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate (β-Cyfluthrin) (CAS No. 68359–37–5) (provided for in subheading 2926.90.30) 3.4% No change No change On or before 12/31/2020 . 366. Deltamethrin Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.04.71 (S)-α-Cyano-3-phenoxybenzyl (1R,3R)-3- (2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate (Deltamethrin) (CAS No. 52918–63–5) (provided for in subheading 2926.90.30) 1.8% No change No change On or before 12/31/2020 . 367. Cyfluthrin (excluding β-cyfluthrin) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.04.72 Cyano(4-fluoro-3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylate (Cyfluthrin, excluding β-Cyfluthrin) (CAS No. 68359–37–5) (provided for in subheading 2926.90.30) Free No change No change On or before 12/31/2020 . 368. Cypermethrin Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.04.73 Cyano(3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)- 2,2-dimethylcyclopropanecarboxylate (Cypermethrin) (CAS No. 52315–07–8) (provided for in subheading 2926.90.30) Free No change No change On or before 12/31/2020 . 369. Esfenvalerate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.04.74 (S)-Cyano(3-phenoxyphenyl)methyl(S)-4-chloro-α-(1-Methylethyl)benzeneacetate (Esfenvalerate) (CAS No. 66230–04–4) (provided for in subheading 2926.90.30) Free No change No change On or before 12/31/2020 . 370. Alpha-cypermethrin technical Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.04.75 (R)-α-Cyano-3-phenoxybenzyl (1S,3S)-3-(2,2-dichlorovinyl)-2,2 dimethylcyclopropanecarboxylate and (S)-α-cyano-3-phenoxybenzyl (1R)-cis-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate isomers (α-cypermethrin technical) (CAS No. 67375–30–8) (provided for in