the following new heading: 9902.25.38 Compounds in which poly(iminocarbonyl-1,4-phenylenecarbonylimino-1,10-decanediyl) (PA10T) (CAS No. 24938–74–7) is the predominant polymer resin (provided for in subheading 3908.90.70) Free No change No change On or before 12/31/2024 . 4725. PA10T/10I polymer compounds Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.39 Compounds in which poly(iminocarbonyl-1,4-phenylenecarbonylimino-1,10-decanediyl)-co-(iminocarbonyl-1,3-phenylenecarbonylimino-1,10-decanediyl) (PA10T/10I) (CAS No. 106413–15–4) is the predominant polymer resin (provided for in subheading 3908.90.70) Free No change No change On or before 12/31/2024 . 4726. Polyurethane aqueous resins Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.40 Butane-1,4-diol