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U.S. Notes (con.) (47) Plate-type supported catalysts (reaction accelerators) for reduction of nitrous oxides (NOx) with enhanced mercury oxidation, with oxides of base metals being the active substances, applied to a stainless steel mesh (described in statistical reporting number 3815.19.0000) (48) Plate-type supported catalysts (reaction accelerators) for reduction of nitrous oxides (NOx), with base metals being the active substances, applied on a titanium dioxide based ceramic material to a stainless steel mesh (described in statistical reporting number 3815.19.0000) (49) Supported catalysts for polymerization (described in statistical reporting number 3815.19.0000) (50) Supported catalysts of copper oxide or zinc oxide as the active ingredients for arsine removal (described in statistical reporting number 3815.19.0000)[Compiler's note: provision corrected retroactively but not currently in effect; see 88 F.R. 8987] (51) Supported catalysts with copper carbonate or zinc carbonate as the active ingredients for low temperature desulfurization (described in statistical reporting number 3815.19.0000) (52) Supported catalysts with metal sulfide as the active substance for mercury removal (described in statistical reporting number 3815.19.0000) (53) Supported catalysts with molybdenum compounds as the active substance for hydrogenation (described in statistical reporting number 3815.19.0000) (54) Supported catalysts with zinc oxide as the active substance (described in statistical reporting number 3815.19.0000) (55) Mixtures of hydrofluorocarbons, containing 40 to 44 percent by weight of 1,1,1,2-tetrafluoroethane (CAS No. 811-97-2), 56 to 60 percent by weight of pentafluoroethane (CAS No. 354-33-6) and up to 2 percent by weight of lubricating oil (described in statistical reporting number 3824.78.0020) (56) Refrigerant gas R-421B, comprising mixtures containing at least 83 percent but not more than 87 percent by weight of pentafluoroethane, at least 13 percent but not more than 17 percent by weight of 1,1,2,2-tetrafluoroethane, and at least 0.5 percent but not more than 2 percent by weight of lubricant (described in statistical reporting number 3824.78.0020) (57) Mixtures containing N,Ndimethyldodecan-1-amine (CAS No. 112–18–5) and N,N-dimethyltetradecan-1-amine (CAS No. 112–75–4) (described in statistical reporting number 3824.99.9297) (58) Silicon monoxide (SiO) (CAS No. 10097-28-6) in powder form (described in statistical reporting number 3824.99.9297) (59) Container units of plastics, each comprising a tub and lid therefore, configured or fitted for the conveyance, packing, or dispensing of wet wipes (described in statistical reporting number 3923.10.9000) (60) Injection molded polypropylene plastic caps or lids each weighing not over 24 grams designed for dispensing wet wipes (described in statistical reporting number 3923.50.0000) (61) One-piece stoppers, of polypropiolactone ("PPL") or polylactic acid ("PLA") polymers, each comprising a disc-shaped top attached to a rounded, tapered plug with a protruding stirrer, measuring at least 55 mm but not more than 120.7 mm in overall length, and weighing at least 0.6 g but not more than 1.1 g each, of a kind used with lids for beverage containers (described in statistical reporting number 3923.50.0000) (62) Endless synchronous belts of vulcanized rubber, molded polyurethane, neoprene, or welded urethane, each of an outside circumference of 60 cm or more but not more than 77 cm and a width of 2.5 cm or more but not exceeding 4 cm, weighing 0.18 kg or more but not exceeding 0.45 kg (described in statistical reporting number 4010.35.9000) (63) Seamless disposable gloves of acrylonitrile butadiene rubber, other than for surgical or medical use (described in statistical reporting number 4015.19.1010) (64) Seamless disposable gloves of natural rubber latex, other than for surgical or medical use (described in statistical reporting number 4015.19.1010) (65) Brake bushings, hard or soft (described in statistical reporting number 4016.99.6050) Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - III - 262