is amended by inserting in numerical sequence the following new heading: 9902.25.64 Poly (hexamethylenebiguanide) hydrochloride (Polyhexanide) (CAS No. 32289–58–0) (provided for in subheading 3911.90.90) Free No change No change On or before 12/31/2025 . 11631. Ethylene-norbornene copolymer Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.65 Poly(ethylene-ran-(2-norbornene)), substantially amorphous, having a glass transition temperature less than 145 °C (CAS No. 26007–43–2) (provided for in subheading 3911.90.90) Free No change No change On or before 12/31/2025 . 11632. Cellulose powder Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.66 Cellulose entirely spherical micro-spheres, each with mean particle size of 1 to 25 µm (CAS No. 9004–34–6) (provided for in subheading 3912.90.00) Free No change No change On or before 12/31/2025 . 11633. Polymaltotriose Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.67 Poly[6)-α-D-glucopyranosyl-(1->4)-α-D-glucopyranosyl-(1->4)-α-D-glucopyranosyl-(1->] (Polymaltotriose) (CAS No. 9057–02–7) (provided for in subheading 3913.90.20) 1.3% No change No change On or before 12/31/2025 . 11634. Chitosan Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.68 Chitosan (methyl