3-(dimethylamino)propyl imide, imide with polyethylene-polypropylene glycol 2-aminopropyl me ether, 2,2′-(1,2-diazenediyl)bis(2-methylbutanenitrile)-initiated (CAS No. 1062609–13–5) (provided for in subheading 3907.20.00) Free No change No change On or before 12/31/2024 . 4706. Dimethylamine/epichlorohydrin/ethylenediamine copolymer Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.20 1,2-Ethanediamine, polymer with 2-(chloromethyl)oxirane and N-methylmethanamine (CAS No. 42751–79–1) (provided for in subheading 3907.30.00) Free No change No change On or before 12/31/2024 . 4707. Linear hydroxyl-terminated aliphatic polycarb diol Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.21 Poly(dimethyl carbonate-co-1,6-hexanediol) (CAS No. 101325–00–2) (provided for in subheading 3907.40.00) Free No change No change On or before 12/31/2024 . 4708. Short hollow PET fibers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.22 Hollow fibers of poly(ethylene terephthalate) (CAS No. 25038–59–9), having a viscosity number of 78 ml/g or higher, each fiber measuring 0.5 mm or more but not more than 5 mm in length (provided for in subheading 3907.61.00) Free No change No change On or before 12/31/2024 . 4709. Polytetrahydrofuran Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.23 Polytetrahydrofuran (CAS No. 25190–06–1) (provided for in subheading 3907.99.50) Free No change No change On or before 12/31/2024 . 4710. Crystalline polyesters Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.24 1,4-Benzenedicarboxylic acid, 1,4-dimethyl ester, polymer with 1,4-butanediol and α-hydro-ω-hydroxypoly(oxy-1,4- butanediyl) (CAS No. 9078–71–1) (provided for in subheading 3907.99.50) Free No change No change On or before 12/31/2024 . 4711. Liquid