99 is amended by inserting in numerical sequence the following new heading: 9902.24.30 Dye fixative used in the textile industry containing benzenesulfonic acid, hydroxy-, sodium salt (1:1), polymer with formaldehyde and 4,4′-sulfonylbis(phenol) (CAS No. 71832–81–0) (provided for in subheading 3809.91.00) Free No change No change On or before 12/31/2024 . 4619. Fuel oil additives: cold flow improvers containing poly(ethylene-co-ethenyl acetate) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.31 Mixtures containing poly(ethylene-co-ethenyl acetate) (CAS No. 24937–78–8) used as a cold flow improver for fuel oils (provided for in subheading 3811.90.00) Free No change No change On or before 12/31/2024 . 4620. Fuel oil additives: cold flow improvers containing fumarate vinyl acetate co-polymer Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.32 Mixtures containing fumarate vinyl acetate co-polymer (CAS No. 68954–13–2) used as a cold flow improver for fuel oils (provided for in subheading 3811.90.00) Free No change No change On or before 12/31/2024 . 4621. Crude oil additives: cold flow improvers containing fumarate vinyl acetate copolymer Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.33 Mixtures containing fumarate vinyl acetate copolymer (CAS No. 68954–15–4 or 68954–14–3) used as a cold flow improver for crude oil (provided for in subheading 3811.90.00) Free No change No change On or before 12/31/2024 . 4622. Pour point depressants Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.34 Mixtures containing hydrophobic acrylic polymer (CAS No. 27029–57–8) used as a pour point depressant for crude oil (provided for in subheading 3811.90.00) Free No change No change On or before 12/31/2024 . 4623. Fuel oil additives: cold flow improvers containing poly (ethylene-co-ethenyl acetate