; of viscose rayon, such fibers containing between 28 percent and 33 percent by weight of silica, measuring 2.2 decitex in 38 mm lengths (provided for in subheading 5504.10.00) Free No change No change On or before 12/31/2020 . 1215. Viscose rayon staple fiber not processed for spinning Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.33 Artificial staple fibers of viscose rayon, not carded, combed or otherwise processed for spinning, containing between 28 and 33 percent by weight of silica, measuring 4.7 decitex in 51 mm lengths (provided for in subheading 5504.10.00) Free No change No change On or before 12/31/2020 . 1216. Reduced flammability lyocell fiber Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.34 Artificial staple fibers of lyocell, not carded, combed or otherwise processed for spinning, measuring 1.7 or more but not over 3.3 decitex and having a fiber length each measuring 25 mm or more but not over 51 mm and containing 25 percent by weight of kaolin (provided for in subheading 5504.90.00) Free No change No change On or before 12/31/2020 . 1217. Acrylic staple fiber Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.35 Acrylic staple fibers, carded, combed or otherwise processed for spinning (provided for in subheading 5506.30.00)