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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General Acrylic filament tow (polyacrylonitrile tow), containing by weight 92 percent or more of polyacrylonitrile, not more than 0.01 percent of zinc and 2 percent or more but not over 8 percent of water, dyed, presented in the form of bundles of crimped product each containing 214,000 filaments (plus or minus 10 percent) with an average decitex of 2.75 (plus or minus 10 percent) and length greater than 2 meters (provided for in subheading 5501.30.00).............................................................. 1/ 9902.13.02 On or before 12/31/2020 No change No change Free 1/ Acrylic filament tow (polyacrylonitrile tow) containing by weight 92 percent or more of polyacrylonitrile, not more than 0.01 percent of zinc and 2 percent or more but not over 8 percent of water, dyed, presented in the form of bundles of crimped product each containing 214,000 filaments (plus or minus 10 percent) with an average decitex of 3.3 (plus or minus 10 percent) and length greater than 2 meters (provided for in subheading 5501.30.00) ............................................................. 1/ 9902.13.03 On or before 12/31/2020 No change No change Free 1/ Acrylic filament tow containing 85 percent or more by weight of acrylonitrile units and 2 percent or more but not more than 8 percent of water, dyed, such tow with a decitex of 5.0 to 5.6, an aggregate filament measure in the tow bundle between 660,000 and 1,200,000 and a length greater than 2 m (provided for in subheading 5501.30.00) .................................. 1/ 9902.13.04 On or before 12/31/2020 No change No change Free 1/ Acrylic filament tow containing by weight 92 percent or more of polyacrylonitrile, not more than 0.01 percent of zinc and 2 percent or more but not over 8 percent of water, such tow dyed and presented in the form of bundles of crimped product each containing 315,000 to 360,000 filaments, with each filament of 3.3 decitex and with a length greater than 2 m (provided for in subheading 5501.30.00) ......................................................... 1/ 9902.13.05 On or before 12/31/2020 No change No change Free 1/ Acrylic staple fibers (polyacrylonitrile staple) containing at least 85 percent by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, colored, crimped, with an average decitex of 3.0 (plus or minus 10 percent) and fiber length of 50 mm (plus or minus 10 percent) (provided for in subheading 5503.30.00).............................................................. 1/ 9902.13.06 On or before 12/31/2020 No change No change Free 1/ Modacrylic staple fibers containing 35 percent or more but not over 85 percent by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, not pigmented (ecru), crimped, with an average decitex of 2.2 (plus or minus 10 percent) and fiber length of 38 mm (plus or minus 10 percent) (provided for in subheading 5503.30.00)................................... 1/ 9902.13.07 On or before 12/31/2020 No change No change Free 1/ 1/ See chapter 99 statistical note 1. Rates of Duty 1 Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - II - 107 Note:The shaded areas indicate the provision has expired