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 90 — Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof · Section XVIII

Entries: 570

Code Level Official description Unit US duty (MFN / pref. / col.2)
9019.10.20.35 US 10-digit Powered by AC adapter No. —
9019.10.20.45 US 10-digit Other No. —
9019.10.20.50 US 10-digit Other No. —
9019.10.20.90 US 10-digit Parts and accessories No. —
9019.10.40.00 US 10-digit Electrically operated apparatus and parts thereof No. Free / — / 35%
9019.10.60.00 US 10-digit Other No. Free / — / 55%
9019.20.00.00 US 10-digit Ozone therapy, oxygen therapy, aerosol therapy, artificial respiration or other therapeutic respiration apparatus; parts and accessories thereof No. Free / — / 35%
9020.00 HS6 subheading Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters; parts and accessories thereof: —
9020.00.40.00 US 10-digit Underwater breathing devices designed as a complete unit to be carried on the person and not requiring attendants No. Free / — / 27.5%
9020.00.60.00 US 10-digit Other breathing appliances and gas masks No. 2.5% / Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9020.00.90.00 US 10-digit Other kg 2.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9021 HS4 heading Orthopedic appliances, including crutches, surgical belts and trusses; splints and other fracture appliances; artificial parts of the body; hearing aids and other appliances which are worn or carried, or implanted in the body, to compensate for a defect or disability; parts and accessories thereof: —
9021.10.00 US 8-digit Orthopedic or fracture appliances, and parts and accessories thereof Free / — / 55%
9021.10.00.50 US 10-digit Bone plates, screws and nails, and other internal fixation devices or appliances No. —
9021.10.00.90 US 10-digit Other No. —
9021.21 HS6 subheading Artificial teeth and parts and accessories thereof: —
9021.21.40.00 US 10-digit Of plastics No. Free / — / 20%
9021.21.80.00 US 10-digit Other No. Free / — / 70%
9021.29 HS6 subheading Other: —
9021.29.40.00 US 10-digit Of plastics No. Free / — / 20%
9021.29.80.00 US 10-digit Other No. Free / — / 70%
9021.31.00.00 US 10-digit Artificial joints and parts and accessories thereof No. Free / — / 55%
9021.39.00.00 US 10-digit Other No. Free / — / 40%
9021.40.00.00 US 10-digit Hearing aids, excluding parts and accessories thereof No. Free / — / 35%
9021.50.00.00 US 10-digit Pacemakers for stimulating heart muscles, excluding parts and accessories thereof No. Free / — / 35%
9021.90 HS6 subheading Other: —
9021.90.40 US 8-digit Parts and accessories for hearing aids and for pacemakers for stimulating heart muscles Free / — / 35%
9021.90.40.40 US 10-digit For hearing aids No. —
9021.90.40.80 US 10-digit Other No. —
9021.90.81.00 US 10-digit Other No. Free / — / 35%
9022 HS4 heading Apparatus based on the use of X-rays or of alpha, beta, gamma or other ionizing radiations, whether or not for medical, surgical, dental or veterinary uses, including radiography or radiotherapy apparatus, X-ray tubes and other X-ray generators, high tension generators, control panels and desks, screens, examination or treatment tables, chairs and the like; parts and accessories thereof: —
9022.12.00.00 US 10-digit Computed tomography apparatus No. Free / — / 35%
9022.13.00.00 US 10-digit Other, for dental uses No. Free / — / 35%
9022.14.00.00 US 10-digit Other, for medical, surgical or veterinary uses No. Free / — / 35%
9022.19.00.00 US 10-digit For other uses No. Free / — / 35%
9022.21.00.00 US 10-digit For medical, surgical, dental or veterinary uses No. Free / — / 35%
9022.29 HS6 subheading For other uses: —
9022.29.40.00 US 10-digit Smoke detectors, ionization type No. Free / — / 35%
9022.29.80.00 US 10-digit Other No. Free / — / 35%
9022.30.00.00 US 10-digit X-ray tubes No. Free / — / 35%
9022.90 HS6 subheading Other, including parts and accessories: —
9022.90.05.00 US 10-digit Radiation generator units No. 0.8% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9022.90.15.00 US 10-digit Radiation beam delivery units No. 1.4% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9022.90.25.00 US 10-digit Other apparatus No. 0.8% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9022.90.40.00 US 10-digit Of X-ray tubes No. 0.9% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9022.90.60.00 US 10-digit Of apparatus based on the use of X-rays No. Free / — / 35%
9022.90.70.00 US 10-digit Of smoke detectors, ionization type No. 1% / Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9022.90.95.00 US 10-digit Other No. 1.4% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9023.00.00.00 US 10-digit Instruments, apparatus and models, designed for demonstrational purposes (for example, in education or exhibitions), unsuitable for other uses, and parts and accessories thereof kg Free / — / Free *
9024 HS4 heading Machines and appliances for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for example, metals, wood, textiles, paper, plastics), and parts and accessories thereof: —
9024.10.00.00 US 10-digit Machines and appliances for testing metals No. Free / — / 40%
9024.80.00.00 US 10-digit Other machines and appliances No. Free / — / 40%
9024.90.00 US 8-digit Parts and accessories Free / — / 40%
9024.90.00.40 US 10-digit Of machines and appliances for testing metals kg —
9024.90.00.80 US 10-digit Other kg —
9025 HS4 heading Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments; parts and accessories thereof: —
9025.11 HS6 subheading Liquid-filled, for direct reading: —
9025.11.20.00 US 10-digit Clinical No. Free / — / 85%
9025.11.40.00 US 10-digit Other No. Free / — / 85%
9025.19 HS6 subheading Other: —
9025.19.40.00 US 10-digit Pyrometers No. Free / — / 45%
9025.19.80 US 8-digit Other Free / — / 40%
9025.19.80.10 US 10-digit Infrared thermometers of a kind described in statistical note 2 of this chapter No. —
9025.19.80.20 US 10-digit Other No. —
9025.19.80.60 US 10-digit Infrared thermometers No. —
9025.19.80.85 US 10-digit Other No. —
9025.80 HS6 subheading Other instruments: —
9025.80.10.00 US 10-digit Electrical No. 1.7% / Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 40%
9025.80.15.00 US 10-digit Barometers, not combined with other instruments No. 1% / Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 40%
9025.80.20.00 US 10-digit Hydrometers and similar floating instruments, whether or not incorporating a thermometer, non-recording No. 2.9% / Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 85%
9025.80.35.00 US 10-digit Hygrometers and psychrometers, non-recording No. 1.4% / Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 45%
9025.80.40.00 US 10-digit Thermographs, barographs, hygrographs and other recording instruments No. 1% / Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
9025.80.50.00 US 10-digit Other No. 1.6% / Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 50%
9025.90.06.00 US 10-digit Parts and accessories kg Free / — / The rate applicable to the article of which it is a part or accessory
9026 HS4 heading Instruments and apparatus for measuring or checking the flow, level, pressure or other variables of liquids or gases (for example, flow meters, level gauges, manometers, heat meters), excluding instruments and apparatus of heading 9014, 9015, 9028 or 9032; parts and accessories thereof: —
9026.10 HS6 subheading For measuring or checking the flow or level of liquids: —
9026.10.20 US 8-digit Electrical Free / — / 40%
9026.10.20.40 US 10-digit Flow meters No. —
9026.10.20.80 US 10-digit Other No. —
9026.10.40.00 US 10-digit Flow meters No. Free / — / $4.50 each + 65%
9026.10.60.00 US 10-digit Other No. Free / — / 35%
9026.20 HS6 subheading For measuring or checking pressure: —
9026.20.40.00 US 10-digit Electrical No. Free / — / 40%
9026.20.80.00 US 10-digit Other No. Free / — / 35%
9026.80 HS6 subheading Other instruments and apparatus: —
9026.80.20.00 US 10-digit Electrical No. Free / — / 40%
9026.80.40.00 US 10-digit Heat meters incorporating liquid supply meters, and anemometers No. Free / — / $4.50 each + 65%
9026.80.60.00 US 10-digit Other No. Free / — / 35%
9026.90 HS6 subheading Parts and accessories: —
9026.90.20.00 US 10-digit Of electrical instruments and apparatus kg Free / — / 40%
9026.90.40.00 US 10-digit Of flow meters, heat meters incorporating liquid supply meters and anemometers kg Free / — / 65%
9026.90.60.00 US 10-digit Other kg Free / — / 35%
9027 HS4 heading Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes; parts and accessories thereof: —
9027.10 HS6 subheading Gas or smoke analysis apparatus: —
9027.10.20.00 US 10-digit Electrical kg, No. Free / — / 40%
9027.10.40.00 US 10-digit Optical instruments and apparatus kg Free / — / 50%
9027.10.60.00 US 10-digit Other kg Free / — / 40%
9027.20 HS6 subheading Chromatographs and electrophoresis instruments: —
9027.20.50 US 8-digit Electrical Free / — / 40%
9027.20.50.30 US 10-digit Electrophoresis instruments No. —
9027.20.50.50 US 10-digit Gas chromatographs No. —
9027.20.50.60 US 10-digit Liquid chromatographs No. —
9027.20.50.80 US 10-digit Other No. —
9027.20.80 US 8-digit Other Free / — / 40%
9027.20.80.30 US 10-digit Gas chromatographs No. —
9027.20.80.60 US 10-digit Liquid chromatographs No. —
9027.20.80.90 US 10-digit Other No. —
9027.30 HS6 subheading Spectrometers, spectrophotometers and spectrographs using optical radiations (ultraviolet, visible, infrared): —
9027.30.40 US 8-digit Electrical Free / — / 40%
9027.30.40.40 US 10-digit Spectrophotometers No. —
9027.30.40.80 US 10-digit Other No. —
9027.30.80 US 8-digit Other Free / — / 50%
9027.30.80.20 US 10-digit Spectroscopes No. —
9027.30.80.80 US 10-digit Other No. —
9027.50 HS6 subheading Other instruments and apparatus using optical radiations (ultraviolet, visible, infrared): —
9027.50.10.00 US 10-digit Exposure meters No. 1.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 27.5%
9027.50.40 US 8-digit Electrical Free / — / 40%
9027.50.40.15 US 10-digit Chemical analysis instruments and apparatus No. —
9027.50.40.20 US 10-digit Thermal analysis instruments and apparatus No. —
9027.50.40.50 US 10-digit Photometers No. —
9027.50.40.60 US 10-digit Other No. —
9027.50.80 US 8-digit Other Free / — / 50%
9027.50.80.15 US 10-digit Chemical analysis instruments and apparatus No. —
9027.50.80.20 US 10-digit Thermal analysis instruments and apparatus No. —
9027.50.80.60 US 10-digit Other No. —
9027.81.00.00 US 10-digit Mass spectrometers No. Free / — / 40%
9027.89 HS6 subheading Other: —
9027.89.25.00 US 10-digit Nuclear magnetic resonance instruments No. Free / — / 40%
9027.89.45 US 8-digit Electrical Free / — / 40%
9027.89.45.30 US 10-digit Chemical analysis instruments and apparatus kg —
9027.89.45.60 US 10-digit Physical analysis instruments and apparatus kg —
9027.89.45.90 US 10-digit Other kg —
9027.89.80 US 8-digit Other Free / — / 40%
9027.89.80.30 US 10-digit Chemical analysis instruments and apparatus kg —
9027.89.80.60 US 10-digit Physical analysis instruments and apparatus kg —
9027.89.80.90 US 10-digit Other kg —
9027.90 HS6 subheading Microtomes; parts and accessories: —
9027.90.20.00 US 10-digit Microtomes No. Free / — / 40%
9027.90.45.00 US 10-digit Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89 No. Free / — / 40%
9027.90.54.00 US 10-digit Of electrophoresis instruments not incorporating an optical or other measuring device kg Free / — / 40%
9027.90.56 US 8-digit Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 Free / — / 40%
9027.90.56.25 US 10-digit Of articles of subheading 9027.20.50 kg —
9027.90.56.30 US 10-digit Of articles of subheading 9027.30.40 kg —
9027.90.56.40 US 10-digit Of articles of subheading 9027.50.10 kg —
9027.90.56.50 US 10-digit Of articles of subheading 9027.50.40 kg —
9027.90.56.95 US 10-digit Other kg —
9027.90.59 US 8-digit Other Free / — / 40%
9027.90.59.10 US 10-digit Of articles of subheading 9027.10.20 kg —
9027.90.59.95 US 10-digit Other kg —
9027.90.64.00 US 10-digit Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 kg Free / — / 50%

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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