What tariff codes fall under heading 3815?

3815110000 — With nickel or nickel compounds as the active substance; 3815120000 — With precious metal or precious-metal compounds as the active substance; 3815120010 — Catalyst, in the form of granules or rings of a diameter of 3|mm or more but not more than 10|mm, consisting of silver on an aluminium oxide support and containing by weight 8|% or more but not more than 40|% of silver; 3815120090 — Other; 3815190000 — Other

3815

Heading 3815 — Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included

Q: How do I classify products under Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included?

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Subheadings

Code	Designation	Duty rate
3815110000	Supported catalysts	6.5%
3815110000	With nickel or nickel compounds as the active substance	6.5%
3815120000	With precious metal or precious-metal compounds as the active substance	6.5%
3815120010	Catalyst, in the form of granules or rings of a diameter of 3\|mm or more but not more than 10\|mm, consisting of silver on an aluminium oxide support and containing by weight 8\|% or more but not more than 40\|% of silver	6.5%
3815120090	Other	6.5%
3815190000	Other	—
3815191000	Catalyst in the form of grains of which 90\|% or more by weight have a particle-size not exceeding 10\|micrometres, consisting of a mixture of oxides on a magnesium-silicate support, containing by weight: -\|20\|% or more but not more than 35\|% of copper and -\|2\|% or more but not more than 3\|% of bismuth, and of an apparent specific gravity of 0,2\|or more but not exceeding 1,0	0%
3815199000	Other	6.5%
3815199010	Catalysts consisting of chromium trioxide, dichromium trioxide or organometallic compounds of chromium, fixed on a silicon dioxide support with a pore volume of 2 cm³/g or more (as determined by the nitrogen absorption method)	6.5%
3815199030	Catalyst containing titanium tetrachloride supported on magnesium dichloride, for use in the manufacture of polypropylene	6.5%
3815199055	Components for a catalyst system, imported as single components or as set, made up of at least one of the following preparations: -ceramic material (CAS RN 66402-68-4), -molybdenum oxide and nickel oxide supported on aluminium oxide, -molybdenum oxide, nickel oxide and aluminium phosphate supported on aluminium oxide, -molybdenum oxide, nickel oxide, aluminium phosphate, silica, and molybdenum supported on aluminium oxide, for use against organic and inorganic impurities in kerosene production	6.5%
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