Other
Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils. > Goods specified in Subheading Note 3 to this Chapter: > Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO) > Other
Duty Rate (from China)
Products classified under Tariff item 3824.99.00.90
Calcium Fluoride Ingot for UV Laser Optics
A Czochralski-grown calcium fluoride (CaF2) single crystal ingot, weighing more than 2.5 grams, intended for use in excimer laser optical windows. It is a cultured crystal that is not yet an optical element, and is therefore classified under this tariff item as a chemical product.
3824.99.00Gallium Arsenide Ingot
An LEC-grown gallium arsenide single crystal ingot over 2.5 grams for LED and solar cell substrates. It is a cultured crystal preparation not elsewhere specified, classified under this tariff item.
3824.99.00Gallium Nitride Ingot for LED Substrate Manufacturing
A cultured gallium nitride (GaN) boule grown by hydride vapor phase epitaxy, weighing over 2.5 grams, in cylindrical ingot form for subsequent wafering. It is a non-optical cultured crystal, classified here as a chemical preparation.
3824.99.00Grown Diamond Substrate
A CVD-grown single-crystal diamond substrate weighing more than 2.5 grams, used in electronics heat sinks. It is a cultured crystal not elsewhere specified, classified under this item.
3824.99.00KY Crystal Ingot
A Potassium Titanyl Phosphate (KTP) single crystal ingot, flux method grown, over 2.5 grams for nonlinear optics. It is a cultured crystal not an optical element, classified under this tariff item.
3824.99.00Lithium Niobate Crystal
A monocrystalline lithium niobate boule, flux-grown, exceeding 2.5 grams, for electro-optic devices. It is a cultured crystal not an optical element, classified under this item.
3824.99.00Quartz Crystal Boule
A hydrothermal synthetic quartz crystal boule greater than 2.5 grams for frequency control applications. It is a cultured crystal excluding finished optics, classified under this tariff item.
3824.99.00Quartz Ingot for Photomask Substrates
A synthetic quartz crystal ingot (fused silica) grown hydrothermally, exceeding 2.5 grams, for EUV photomask blanks in chip fabrication. As a cultured crystal that is not an optical element, it falls under this tariff item.
3824.99.00Sapphire Ingot for Optical Window Substrates
A Czochralski-grown synthetic sapphire (aluminum oxide) ingot weighing more than 2.5 grams, used for laser windows and scratch-resistant displays. It is a cultured crystal ingot, not yet an optical element, classified under this item.
3824.99.00Silicon Carbide Ingot for Semiconductor Wafer Production
A large cultured silicon carbide crystal grown via physical vapor transport, weighing over 2.5 grams, supplied in ingot form before slicing into wafers. It is a non-optical cultured crystal, classified here.
3824.99.00Silicon Ingot for Power Semiconductor Slicing
A monocrystalline silicon ingot produced by the Czochralski process, over 2.5 grams, for high-voltage power diode wafer production. It is a cultured crystal ingot, not an optical element, classified under this tariff item.
3824.99.00Silicon Ingot for Semiconductors
A high-purity monocrystalline silicon ingot, cultured via Czochralski method, weighing more than 2.5 grams, used as raw material for wafer slicing. It is a cultured crystal not specified elsewhere, classified under this item.
3824.99.00Synthetic Sapphire Boule
A large single-crystal synthetic sapphire boule weighing over 2.5 grams, used in electronics and optics manufacturing. It is a cultured crystal excluding optical elements of Chapter 90, classified under this tariff item.
3824.99.00YAG Crystal Boule
A Yttrium Aluminum Garnet (YAG) single crystal boule, grown by Czochralski process, over 2.5 grams, for laser rod production. It is a cultured crystal excluding Chapter 90 optics, classified under this item.
3824.99.00Yttrium Aluminum Garnet (YAG) Ingot for Laser Rods
A doped Y3Al5O12 (YAG) crystal ingot grown by the Czochralski method, over 2.5 grams, for Nd:YAG solid-state laser rods. It is a cultured non-optical crystal ingot, classified under this item.