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Harmonized Tariff Schedule (2025 HTS Revision 7 (04/05/2025))

Heading	Duty(general)	Duty(china)	Article Description	Compare Code
2921.45			1-Naphthylamine (α-Naphthylamine), 2-Naphthylamine (β-Naphthylamine), and their derivatives; salts thereof:	--
2921.45.10.00	6.5%	The duty provided in the applicable subheading + 25%	7-Amino-1,3-naphthalenedisulfonic acid and its salts; 5-Amino-2-naphthalenesulfonic acid and its salts; 8-Amino-1-naphthalenesulfonic acid and its salts; andN-Phenyl-2-naphthylamine	vs-292145
2921.45.20.00	5.8%	The duty provided in the applicable subheading + 25%	3-Amino-2,7-naphthalenedisulfonic acid; 4-Amino-1-naphthalenesulfonic acid, sodium salt; 5-Amino-1-naphthalenesulfonic acid (Laurent's acid); 8-Amino-2-naphthalenesulfonic acid and its salts; 7-Amino-1,3,6-naphthalenetrisulfonic acid; 8-Anilino-1-naphthalenesulfonic acid (Phenyl Peri acid) and its salts; andN-Ethyl-1-naphthylamine	vs-2921451000
2921.45.25.00	Free	The duty provided in the applicable subheading + 25%	Mixtures of 5- and 8-amino-2-naphthalene- sulfonic acid; 2-Naphthylamine-6-sulfonic acid; ando-Naphthionic acid (1-amino- 2-naphthalene- sulfonic acid) Other:	vs-2921452000
2921.45.60.00	6.5%	The duty provided in the applicable subheading + 7.5%	Products described in additional U.S. note 3 to section VI	vs-2921452500
2921.45.90	6.5%	The duty provided in the applicable subheading + 25%	Other	vs-2921456000
2921.45.90.10	6.5%	The duty provided in the applicable subheading + 25%	2-Amino-1-naphthalenesulfonic acid (Tobias acid)	vs-29214590
2921.45.90.90	6.5%	The duty provided in the applicable subheading + 25%	Other	vs-2921459010