;silicate (CAS No. 68611–47–2), yttrium oxide sulfide (Y2O2S), europium-doped (CAS No. 68784–83–8), erbium sodium ytterbium fluoride (Er0.04NaYb0.96F4) (CAS No. 753489–08–6), diyttrium dioxide sulfide (CAS No. 12340–04–4), oxygen(2-);yttrium(3+) (CAS No. 1314–36–9), (CAS No. 1314–37–9) and erbium(III) oxide (CAS No. 12061–16–4) (provided for in subheading 3206.50.00) Free No change No change On or before 12/31/2024 . 4543. Ribbon/Matrix Resin Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.23.54 Optical fiber ribbon cable matrix resin, a polymer in the form of a liquid coating, with a density of approximately 1.12 kg/liter, viscosity of 3000 to 5000 cps at 25 °C, with elongation greater than 20 percent and tensile strength of 22 to 32 MPa (provided for in subheading 3208.20.00) Free No change No change On or before 12/31/2024 . 4544. Bonding agent 2005 Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.23.55 Solution as defined in note 4 to chapter 32, mixture of poly(tolylene 2,4-diisocyanate) (CAS No. 26006–20–2)