Trade reference

HS code reference lookup

Enter a code (e.g. 8518 or 8518.30.20.00) or an English product name to see official schedule descriptions and the code hierarchy; when one description matches several candidate classifications they are all listed for you or your broker to weigh against product specifics.

Data: Harmonized Tariff Schedule of the United States (HTSUS) · Revision 22 (2026) · effective 10/30/2026 · USITC HTS · US public domain
中华人民共和国进出口税则(2026) · 税委会公告2025年第12号 · effective 2026-01-01 · official notice

A reference lookup is not a customs classification ruling. Duty rates shown are U.S. import rates only — they are not your destination country’s rates.

Digits (with or without dots) search by code prefix; words search English official descriptions. The dataset is English-only — Chinese terms get an explicit notice rather than a guess.

Chapter 28 — Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes · Section VI

Entries: 459

Code Level Official description Unit US duty (MFN / pref. / col.2)
2836.40.10.00 US 10-digit Dipotassium carbonate kg 1.9% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 6%
2836.40.20.00 US 10-digit Potassium hydrogencarbonate (Potassium bicarbonate) kg 1.3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 4.8%
2836.50.00.00 US 10-digit Calcium carbonate kg Free / — / 25%
2836.60.00.00 US 10-digit Barium carbonate kg 2.3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 8.4% *
2836.91.00 US 8-digit Lithium carbonates 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2836.91.00.10 US 10-digit U.S.P. grade kg —
2836.91.00.50 US 10-digit Other kg —
2836.92.00.00 US 10-digit Strontium carbonate kg 4.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2836.99 HS6 subheading Other: —
2836.99.10.00 US 10-digit Cobalt carbonates kg 4.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 30%
2836.99.20.00 US 10-digit Bismuth carbonate kg 5.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
2836.99.30.00 US 10-digit Commercial ammonium carbonate and other ammonium carbonates kg 1.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 16%
2836.99.40.00 US 10-digit Lead carbonates kg 0.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 4.5%
2836.99.50 US 8-digit Other 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2836.99.50.10 US 10-digit Zirconium carbonates kg —
2836.99.50.50 US 10-digit Other kg —
2837 HS4 heading Cyanides, cyanide oxides and complex cyanides: —
2837.11.00.00 US 10-digit Of sodium kg Free / — / Free
2837.19.01 US 8-digit Other Free / — / Free *
2837.19.01.10 US 10-digit Potassium cyanide kg —
2837.19.01.15 US 10-digit Calcium cyanide kg —
2837.19.01.25 US 10-digit Other kg —
2837.20 HS6 subheading Complex cyanides: —
2837.20.10.00 US 10-digit Potassium ferricyanide kg 1.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 5.1%
2837.20.51.00 US 10-digit Other kg 1.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 8.5%
2839 HS4 heading Silicates; commercial alkali metal silicates: —
2839.11.00.00 US 10-digit Sodium metasilicates kg 1.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 3%
2839.19.00.00 US 10-digit Other kg 1.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 3%
2839.90 HS6 subheading Other: —
2839.90.10.00 US 10-digit Of potassium kg 3.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2839.90.50.00 US 10-digit Other kg 3.1% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2840 HS4 heading Borates; peroxoborates (perborates): —
2840.11.00.00 US 10-digit Anhydrous kg 0.3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 1.2%
2840.19.00.00 US 10-digit Other kg 0.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 0.4%
2840.20.00.00 US 10-digit Other borates kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2840.30.00 US 8-digit Peroxoborates (perborates) 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2840.30.00.10 US 10-digit Sodium perborate kg —
2840.30.00.50 US 10-digit Other kg —
2841 HS4 heading Salts of oxometallic or peroxometallic acids: —
2841.30.00.00 US 10-digit Sodium dichromate kg 2.4% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 8.5%
2841.50 HS6 subheading Other chromates and dichromates; peroxochromates: —
2841.50.10.00 US 10-digit Potassium dichromate kg 1.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 3.5%
2841.50.91.00 US 10-digit Other kg 3.1% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2841.61.00.00 US 10-digit Potassium permanganate kg 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 23%
2841.69.00 US 8-digit Other 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 23%
2841.69.00.10 US 10-digit Sodium permanganate kg —
2841.69.00.90 US 10-digit Other kg —
2841.70 HS6 subheading Molybdates: —
2841.70.10.00 US 10-digit Of ammonium kg, Mo kg 4.3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 29%
2841.70.50.00 US 10-digit Other kg, Mo kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2841.80.00 US 8-digit Tungstates (wolframates) 5.5% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) / 49.5%
2841.80.00.10 US 10-digit Of ammonium kg, W kg —
2841.80.00.20 US 10-digit Of calcium kg, W kg —
2841.80.00.50 US 10-digit Other kg, W kg —
2841.90 HS6 subheading Other: —
2841.90.10.00 US 10-digit Vanadates kg, V kg 5.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 40%
2841.90.20.00 US 10-digit Ammonium perrhenate kg 3.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2841.90.30.00 US 10-digit Potassium stannate kg 3.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2841.90.40.00 US 10-digit Aluminates kg 3.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25%
2841.90.45.00 US 10-digit Chromates of zinc or of lead kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2841.90.50.00 US 10-digit Other kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2842 HS4 heading Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides: —
2842.10.00.00 US 10-digit Double or complex silicates, including aluminosilicates whether or not chemically defined kg 3.7% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,K,KR,MA,OM,P, PA,PE,S,SG) / 25%
2842.90 HS6 subheading Other: —
2842.90.10.00 US 10-digit Fulminates, cyanates and thiocyanates kg 3.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2842.90.90 US 8-digit Other 3.3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2842.90.90.10 US 10-digit Selenides and tellurides kg —
2842.90.90.50 US 10-digit Other kg —
2843 HS4 heading Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals: —
2843.10.00.00 US 10-digit Colloidal precious metals g 5.5% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) / 65%
2843.21.00.00 US 10-digit Silver nitrate kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2843.29.01.00 US 10-digit Other kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25%
2843.30.00.00 US 10-digit Gold compounds kg 5% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25%
2843.90.00.00 US 10-digit Other compounds; amalgams kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2844 HS4 heading Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products: —
2844.10 HS6 subheading Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds: —
2844.10.10.00 US 10-digit Uranium metal kg 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 45%
2844.10.20 US 8-digit Uranium compounds Free / — / Free
2844.10.20.10 US 10-digit Oxide kg —
2844.10.20.25 US 10-digit Hexafluoride kg —
2844.10.20.55 US 10-digit Other kg —
2844.10.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) / 45%
2844.20.00 US 8-digit Uranium enriched in U235 and its compounds; plutonium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U235, plutonium or compounds of these products Free / — / Free
2844.20.00.10 US 10-digit Oxide kg —
2844.20.00.20 US 10-digit Fluorides kg —
2844.20.00.30 US 10-digit Other kg —
2844.20.00.50 US 10-digit Other kg —
2844.30 HS6 subheading Uranium depleted in U235 and its compounds; thorium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium depleted in U235, thorium, or compounds of these products: —
2844.30.10.00 US 10-digit Thorium compounds kg 5.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
2844.30.20 US 8-digit Uranium compounds Free / — / Free
2844.30.20.10 US 10-digit Oxide kg —
2844.30.20.20 US 10-digit Fluorides kg —
2844.30.20.50 US 10-digit Other kg —
2844.30.50 US 8-digit Other 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 45%
2844.30.50.10 US 10-digit Uranium metal kg —
2844.30.50.50 US 10-digit Other kg —
2844.41.00.00 US 10-digit Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds kg Free / — / Free
2844.42.00.00 US 10-digit Actinium-225, actinium-227, californium-253, curium-240, curium-241, curium-242, curium-243, curium-244, einsteinium-253, einsteinium-254, gadolinium-148, polonium-208, polonium-209, polonium-210, radium-223, uranium-230 or uranium-232, and their compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements or compounds GBq Free / — / Free
2844.43.00 US 8-digit Other radioactive elements and isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds Free / — / Free
2844.43.00.10 US 10-digit Elements, isotopes and compounds with cobalt-60 radioactivity only GBq —
2844.43.00.21 US 10-digit Americium-241, californium-252, cesium-137, gadolinium-153, idium-192, promethium-147, radium-226, selenium-75, or ytterbium-169 GBq —
2844.43.00.28 US 10-digit Other GBq —
2844.43.00.50 US 10-digit Other kg —
2844.44.00.00 US 10-digit Radioactive residues kg Free / — / Free
2844.50.00.00 US 10-digit Spent (irradiated) fuel elements (cartridges) of nuclear reactors kg Free / — / Free
2845 HS4 heading Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined: —
2845.10.00.00 US 10-digit Heavy water (Deuterium oxide) kg Free / — / 25%
2845.20.00.00 US 10-digit Boron enriched in boron-10 and its compounds kg Free / — / 25%
2845.30.00.00 US 10-digit Lithium enriched in lithium-6 and its compounds kg Free / — / 25%
2845.40.00.00 US 10-digit Helium-3 kg Free / — / 25%
2845.90.01.00 US 10-digit Other kg Free / — / 25%
2846 HS4 heading Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals: —
2846.10.00 US 8-digit Cerium compounds 5.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
2846.10.00.10 US 10-digit Cerium oxides kg —
2846.10.00.50 US 10-digit Other kg —
2846.90 HS6 subheading Other: —
2846.90.20 US 8-digit Mixtures of rare-earth oxides or of rare-earth chlorides Free / — / 25% *
2846.90.20.05 US 10-digit Containing lanthanum as the predominant metal kg —
2846.90.20.15 US 10-digit Containing yttrium or scandium as the predominant metal kg —
2846.90.20.40 US 10-digit Other kg —
2846.90.20.82 US 10-digit Containing yttrium or scandium as the predominant metal kg —
2846.90.20.84 US 10-digit Other kg —
2846.90.40.00 US 10-digit Yttrium bearing materials and compounds containing by weight more than 19 percent but less than 85 percent yttrium oxide equivalent kg Free / — / 25% *
2846.90.80 US 8-digit Other 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2846.90.80.70 US 10-digit Containing lanthanum as the predominant metal kg —
2846.90.80.75 US 10-digit Other kg —
2846.90.80.90 US 10-digit Other kg —
2847.00.00.00 US 10-digit Hydrogen peroxide, whether or not solidified with urea kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2849 HS4 heading Carbides, whether or not chemically defined: —
2849.10.00.00 US 10-digit Of calcium kg 1.8% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 10%
2849.20 HS6 subheading Of silicon: —
2849.20.10.00 US 10-digit Crude kg Free / — / Free
2849.20.20.00 US 10-digit In grains, or ground, pulverized or refined kg 0.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 1.6% *
2849.90 HS6 subheading Other: —
2849.90.10.00 US 10-digit Of boron kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2849.90.20.00 US 10-digit Of chromium kg 4.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2849.90.30.00 US 10-digit Of tungsten kg, W kg 5.5% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) / 55.5%
2849.90.50.00 US 10-digit Other kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2850.00 HS6 subheading Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849: —
2850.00.05.00 US 10-digit Of calcium kg Free / — / 25%
2850.00.07.00 US 10-digit Of titanium kg 4.9% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 30%
2850.00.10.00 US 10-digit Of tungsten kg, W kg 5.5% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) / 45.5%
2850.00.20.00 US 10-digit Of vanadium kg, V kg 5.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 40%
2850.00.50.00 US 10-digit Other kg 3.7% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2852 HS4 heading Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams: —
2852.10 HS6 subheading Chemically defined: —
2852.10.10.00 US 10-digit Mercuric oxide, mercuric cyanide, mercuric oxycyanide and mercuric potassium cyanide kg Free / — / 25%
2852.10.90.00 US 10-digit Other kg 3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2852.90 HS6 subheading Other: —
2852.90.05.00 US 10-digit Albuminates, tannates and phosphides of mercury kg Free / — / 25%

Browse by chapter

Chapters 01–97 of the Harmonized System (US chapters 98/99 are national legislation and not included).

Section I — Live Animals; Animal Products
Section II — Vegetable Products
Section III — Animal, Vegetable Or Microbial Fats And Oils And Their Cleavage Products; Prepared Edible Fats; Animal Or Vegetable Waxes
Section IV — Prepared Foodstuffs; Beverages, Spirits And Vinegar; Tobacco And Manufactured Tobacco Substitutes; Products, Whether Or Not Containing Nicotine, Intended For Inhalation Without Combustion; Other Nicotine Containing Products Intended For The Intake Of Nicotine Into The Human Body
Section V — Mineral Products
Section VI — Products Of The Chemical Or Allied Industries
Section VII — Plastics And Articles Thereof; Rubber And Articles Thereof
Section VIII — Raw Hides And Skins, Leather, Furskins And Articles Thereof; Saddlery And Harness; Travel Goods, Handbags And Similar Containers; Articles Of Animal Gut (Other Than Silkworm Gut)
Section IX — Wood And Articles Of Wood; Wood Charcoal; Cork And Articles Of Cork; Manufactures Of Straw, Of Esparto Or Of Other Plaiting Materials; Basketware And Wickerwork
Section X — Pulp Of Wood Or Of Other Fibrous Cellulosic Material; Recovered (Waste And Scrap) Paper Or Paperboard; Paper And Paperboard And Articles Thereof
Section XI — Textiles And Textile Articles
Section XII — Footwear, Headgear, Umbrellas, Sun Umbrellas, Walking-Sticks, Seat-Sticks, Whips, Riding-Crops And Parts Thereof; Prepared Feathers And Articles Made Therewith; Artificial Flowers; Articles Of Human Hair
Section XIII — Articles Of Stone, Plaster, Cement, Asbestos, Mica Or Similar Materials; Ceramic Products; Glass And Glassware
Section XIV — Natural Or Cultured Pearls, Precious Or Semiprecious Stones, Precious Metals, Metals Clad With Precious Metal, And Articles Thereof; Imitation Jewelry; Coin
Section XV — Base Metals And Articles Of Base Metal
Section XVI — Machinery And Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders And Reproducers, Television Image And Sound Recorders And Reproducers, And Parts And Accessories Of Such Articles
Section XVII — Vehicles, Aircraft, Vessels And Associated Transport Equipment
Section XVIII — Optical, Photographic, Cinematographic, Measuring, Checking, Precision, Medical Or Surgical Instruments And Apparatus; Clocks And Watches; Musical Instruments; Parts And Accessories Thereof
Section XIX — Arms And Ammunition; Parts And Accessories Thereof
Section XX — Miscellaneous Manufactured Articles
Section XXI — Works Of Art, Collectors' Pieces And Antiques

What this data covers — and what it does not

  • International layer: HS chapters 01–97 with 4-digit headings and 6-digit subheadings (HS 2022 edition) — the part shared by every member country’s tariff schedule.
  • US layer: 8-digit rate lines and 10-digit statistical suffixes of the US HTS, clearly badged; the duty columns are US import rates for reference only.
  • China layer: PRC 2026 tariff schedule 8-digit lines with official Chinese names and MFN/ordinary rates, matched to international rows by shared HS6 prefix; provisional (△), agreement, quota, VAT/consumption and 10-digit customs numbers are not in scope.
  • Not included: the EU’s 8-digit CN codes, other countries’ national extensions, WCO Explanatory Notes, and US chapters 98/99 (national legislation).
  • Descriptions are English-only. Classification of a real product needs the General Rules of Interpretation plus material, composition, use and processing details — treat every result as a candidate, not a ruling.

Official verification

For declarations, pre-classification or current rates, use an official channel:

Frequently asked

Can I declare with the code I find here?

No — this is a reference lookup. Candidate codes, official descriptions and hierarchy are informational, not a customs classification ruling. Formal classification applies the General Rules of Interpretation to material, composition, use and processing; ask your customs authority for a binding ruling when needed.

Why does one product name return several codes?

That's normal. The same description appears at different levels (heading/subheading/statistical suffix) and under different chapters — cotton, for example, lives in the yarn, fabric and apparel chapters alike. The tool lists every candidate instead of guessing one answer for you.

Whose 8- and 10-digit codes are these?

The international Harmonized System only standardizes the first six digits (2-digit chapter + 4-digit heading + 6-digit subheading). The 8/10-digit codes here are US HTS national extensions and are labelled as such; China uses an 8-digit tariff schedule and the EU an 8-digit CN code — neither is in this dataset.

Are the duty rates shown what I'd pay importing to my country?

No. The rate columns are US import duty (General MFN / Special preferential / Column 2) — they apply to imports into the United States and are shown for reference only. Check the official tariff service of your destination country for actual rates.

How does Chinese search work?

Chinese terms are matched verbatim against the official Chinese product names in the PRC 2026 tariff schedule — no machine translation, no guessed codes. Colloquial names may miss; try a more formal name or English.

How fresh is the data?

The snapshot is the USITC's 2026 HTS Revision 22 (effective 2026-10-30); the page always shows the release and its effective date and warns when the snapshot grows stale. Use the official live service for filings.

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