new heading: 9902.11.75 Iminidiacetic acid ion-exchange resin (sodium 2,2′-[(4-vinylbenzyl)imino]diacetate - 1,4-divinylbenzene (2:1:1) (CAS No. 70660–50–3) in spherical beads with a mean particle size between 0.425 and 1.20 mm (provided for in subheading 3914.00.60) Free No change No change On or before 12/31/2020 . 1060. Ion-exchange resin and chelating resin with a isothiouronium functional group Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.76 Ion-exchange resin and chelating resin, with a isothiouronium functional group, iminodiacetic acid ion-exchange resin (CAS No. 109945–55–3) in spherical beads with a mean particle size between 0.30 and 1.20 mm (provided for in subheading 3914.00.60) Free No change No change On or before 12/31/2020 . 1061. Ion-exchange resin and chelating resin with an aminophosphoric functional group Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.77 Ion-exchange resin and chelating resin with an aminophosphoric functional group, polystyrene resin with aminophosphonic acid groups (CAS No. 125935–42–4) in spherical beads with a mean particle size between 0.30 and 1.20 mm (provided for in subheading 3914.00.60) Free No change No change On or before 12/31/2020 . 1062. Amberlite IRP88 Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.78 Potassium methacrylate-divinylbenzene copolymer (Polacrilin potassium) (CAS No. 65405–55–2) (provided for in subheading 3914.00.60) Free No change No change On or before 12/31/2020 . 1063. Strips of 100 percent ePTFE sealant between 3mm and 30mm thick Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.79 Strips wholly of expanded poly(tetrafluoroethylene) (PTFE) (CAS No. 9002–84–0), noncellular, with adhesive backing, of a thickness greater than 3 mm but not over 30 mm, presented rolled in spools, certified by the