NOW FOR USA HTS Harmonized Tariff Schedule (2024 HTS Revision 1)
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Harmonized Tariff Schedule (2024 HTS Revision 1)

Heading Duty(general) Duty(china) Article Description Compare Code
3815     Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included:
Supported catalysts:
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3815.11.00.00 Free  The duty provided in the applicable subheading + 25%  With nickel or nickel compounds as the active substance vs-3815
3815.12.00.00 Free  The duty provided in the applicable subheading + 25%  With precious metal or precious metal compounds as the active substance vs-3815110000
3815.19.00.00 Free  The duty provided in the applicable subheading + 25%  Other vs-3815120000
3815.90     Other:
Consisting wholly of inorganic substances:
vs-3815190000
3815.90.10.00 6.5%  The duty provided in the applicable subheading + 25%  Of bismuth, of tungsten or of vanadium vs-381590
3815.90.20.00 2.8%  The duty provided in the applicable subheading + 25%  Of mercury or of molybdenum vs-3815901000
3815.90.30.00 Free  The duty provided in the applicable subheading + 25%  Other vs-3815902000
3815.90.50.00 5%  The duty provided in the applicable subheading + 25%  Other vs-3815903000