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 25 — Salt; sulfur; earths and stone; plastering materials, lime and cement · Section V

Entries: 144

Code Level Official description Unit US duty (MFN / pref. / col.2)
2501.00.00.00 US 10-digit Salt (including table salt and denatured salt) and pure sodium chloride, whether or not in aqueous solution or containing added anti-caking or free-flowing agents; sea water t Free / — / 26% *
2502.00.00.00 US 10-digit Unroasted iron pyrites t Free / — / Free
2503.00.00 US 8-digit Sulfur of all kinds, other than sublimed sulfur, precipitated sulfur and colloidal sulfur Free / — / Free
2503.00.00.10 US 10-digit Crude or unrefined sulfur t —
2503.00.00.90 US 10-digit Other t —
2504 HS4 heading Natural graphite: —
2504.10 HS6 subheading In powder or in flakes: —
2504.10.10.00 US 10-digit Crystalline flake (not including flake dust) kg Free / — / 3.6¢/kg
2504.10.50.00 US 10-digit Other kg Free / — / 10%
2504.90.00.00 US 10-digit Other kg Free / — / 10%
2505 HS4 heading Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26: —
2505.10 HS6 subheading Silica sands and quartz sands: —
2505.10.10.00 US 10-digit Sand containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron t Free / — / $1.97/t
2505.10.50.00 US 10-digit Other t Free / — / Free
2505.90.00.00 US 10-digit Other t Free / — / Free
2506 HS4 heading Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: —
2506.10.00 US 8-digit Quartz Free / — / Free
2506.10.00.10 US 10-digit Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron t —
2506.10.00.50 US 10-digit Other t —
2506.20.00 US 8-digit Quartzite Free / — / Free
2506.20.00.10 US 10-digit Crude or roughly trimmed t —
2506.20.00.80 US 10-digit Other t —
2507.00.00.00 US 10-digit Kaolin and other kaolinic clays, whether or not calcined t Free / — / $2.46/t
2508 HS4 heading Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: —
2508.10.00.00 US 10-digit Bentonite t Free / — / $3.20/t
2508.30.00.00 US 10-digit Fire-clay t Free / — / $1.97/t
2508.40.01 US 8-digit Other clays Free / — / $1.97/t
2508.40.01.10 US 10-digit Common blue clay and other ball clays t —
2508.40.01.20 US 10-digit Decolorizing earths and fuller's earth t —
2508.40.01.50 US 10-digit Other t —
2508.50.00.00 US 10-digit Andalusite, kyanite and sillimanite t Free / — / Free
2508.60.00.00 US 10-digit Mullite t Free / — / 30%
2508.70.00.00 US 10-digit Chamotte or dinas earth t Free / — / Free
2509.00 HS6 subheading Chalk: —
2509.00.10.00 US 10-digit Crude t Free / — / Free
2509.00.20.00 US 10-digit Other t Free / — / 13%
2510 HS4 heading Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk: —
2510.10.00.00 US 10-digit Unground t Free / — / Free
2510.20.00.00 US 10-digit Ground t Free / — / Free
2511 HS4 heading Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816: —
2511.10 HS6 subheading Natural barium sulfate (barytes): —
2511.10.10.00 US 10-digit Ground t Free / — / $7.38/t
2511.10.50.00 US 10-digit Other t $1.25/t / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / $3.94/t
2511.20.00.00 US 10-digit Natural barium carbonate (witherite) kg Free / — / 30%
2512.00.00.00 US 10-digit Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less t Free / — / Free *
2513 HS4 heading Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: —
2513.10.00 US 8-digit Pumice stone Free / — / Free
2513.10.00.10 US 10-digit Crude or in irregular pieces, including crushed pumice kg —
2513.10.00.80 US 10-digit Other kg —
2513.20 HS6 subheading Emery, natural corundum, natural garnet and other natural abrasives: —
2513.20.10.00 US 10-digit Crude or in irregular pieces kg Free / — / Free
2513.20.90.00 US 10-digit Other kg Free / — / 2.2¢/kg
2514.00.00.00 US 10-digit Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape t Free / — / 25% *
2515 HS4 heading Marble, travertine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: —
2515.11.00.00 US 10-digit Crude or roughly trimmed m3, t Free / — / $22.95/m3
2515.12 HS6 subheading Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: —
2515.12.10.00 US 10-digit Marble t Free / — / 13%
2515.12.20.00 US 10-digit Travertine t 3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 50%
2515.20.00.00 US 10-digit Other calcareous monumental or building stone; alabaster t 3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 50%
2516 HS4 heading Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: —
2516.11.00.00 US 10-digit Crude or roughly trimmed m3, t Free / — / $8.83/m3
2516.12.00 US 8-digit Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape 2.8% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 60%
2516.12.00.30 US 10-digit Having a thickness of 7.5 cm or more t —
2516.12.00.60 US 10-digit Other t —
2516.20 HS6 subheading Sandstone: —
2516.20.10.00 US 10-digit Crude or roughly trimmed m3, t Free / — / $5.30/m3
2516.20.20.00 US 10-digit Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape t 3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 50%
2516.90.00 US 8-digit Other monumental or building stone 3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 50%
2516.90.00.30 US 10-digit Having a thickness of 7.5 cm or more t —
2516.90.00.60 US 10-digit Other t —
2517 HS4 heading Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling, or for railway or other ballast; shingle and flint, whether or not heat-treated; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: —
2517.10.00 US 8-digit Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling, or for railway or other ballast, shingle and flint, whether or not heat-treated Free / — / 30%
2517.10.00.15 US 10-digit Pebbles and gravel t —
2517.10.00.20 US 10-digit Limestone, except pebbles and gravel t —
2517.10.00.55 US 10-digit Other t —
2517.20.00.00 US 10-digit Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10 t Free / — / 30%
2517.30.00.00 US 10-digit Tarred macadam t Free / — / 30%
2517.41.00.00 US 10-digit Of marble t Free / — / 30%
2517.49.00.00 US 10-digit Other t Free / — / $1.10/t
2518 HS4 heading Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: —
2518.10.00.00 US 10-digit Dolomite, not calcined or sintered t Free / — / Free
2518.20.00.00 US 10-digit Calcined or sintered dolomite t 3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 30%
2519 HS4 heading Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure: —
2519.10.00.00 US 10-digit Natural magnesium carbonate (magnesite) t Free / — / $10.33/t
2519.90 HS6 subheading Other: —
2519.90.10.00 US 10-digit Fused magnesia and dead-burned (sintered) magnesia kg Free / — / 1.7¢/kg
2519.90.20.00 US 10-digit Caustic calcined magnesite t Free / — / $20.70/t
2519.90.50.00 US 10-digit Other kg Free / — / 15.4¢/kg *
2520 HS4 heading Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retarders: —
2520.10.00.00 US 10-digit Gypsum; anhydrite t Free / — / Free
2520.20.00.00 US 10-digit Plasters t Free / — / $1.38/t
2521.00.00.00 US 10-digit Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement t Free / — / Free
2522 HS4 heading Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825: —
2522.10.00.00 US 10-digit Quicklime kg Free / — / 0.2¢/kg, including weight of container
2522.20.00.00 US 10-digit Slaked lime kg Free / — / 0.3¢/kg, including weight of container
2522.30.00.00 US 10-digit Hydraulic lime kg Free / — / 0.2¢/kg, including weight of container
2523 HS4 heading Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers: —
2523.10.00.00 US 10-digit Cement clinkers t Free / — / $1.32/t, including weight of container
2523.21.00.00 US 10-digit White cement, whether or not artificially colored t Free / — / $1.76/t, including weight of container
2523.29.00.00 US 10-digit Other t Free / — / $1.32/t, including weight of container
2523.30.00.00 US 10-digit Aluminous cement t Free / — / $1.32/t, including weight of container
2523.90.00.00 US 10-digit Other hydraulic cements t Free / — / $1.32/t, including weight of container
2524 HS4 heading Asbestos: —
2524.10.00.00 US 10-digit Crocidolite (Blue) t Free / — / Free
2524.90.00 US 8-digit Other Free / — / Free
2524.90.00.10 US 10-digit Amosite t —
2524.90.00.30 US 10-digit Crudes t —
2524.90.00.40 US 10-digit Milled fibers, group 3 grades (spinning fibers or equivalent) t —
2524.90.00.45 US 10-digit Milled fibers, group 4 and 5 grades t —
2524.90.00.55 US 10-digit Other t —
2524.90.00.60 US 10-digit Other t —
2525 HS4 heading Mica, including splittings; mica waste: —
2525.10.00 US 8-digit Crude mica and mica rifted into sheets or splittings Free / — / Free
2525.10.00.10 US 10-digit Split block mica kg —
2525.10.00.20 US 10-digit Mica splittings kg —
2525.10.00.50 US 10-digit Other kg —
2525.20.00.00 US 10-digit Mica powder kg Free / — / 20%
2525.30.00.00 US 10-digit Mica waste kg Free / — / 8.8¢/kg
2526 HS4 heading Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc: —
2526.10.00.00 US 10-digit Not crushed, not powdered kg Free / — / 0.6¢/kg
2526.20.00.00 US 10-digit Crushed or powdered t Free / — / 35%
2528.00.00 US 8-digit Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 percent of H3BO3 calculated on the dry weight Free / — / Free
2528.00.00.05 US 10-digit Natural sodium borates and concentrates thereof (whether or not calcined) kg —
2528.00.00.10 US 10-digit Natural calcium borates kg —
2528.00.00.50 US 10-digit Other kg —
2529 HS4 heading Feldspar; leucite, nepheline and nepheline syenite; fluorspar: —
2529.10.00.00 US 10-digit Feldspar t Free / — / 49¢/t
2529.21.00.00 US 10-digit Containing by weight 97 percent or less of calcium fluoride t Free / — / 13.5%
2529.22.00.00 US 10-digit Containing by weight more than 97 percent of calcium fluoride t Free / — / $5.51/t
2529.30.00 US 8-digit Leucite; nepheline and nepheline syenite Free / — / Free
2529.30.00.10 US 10-digit Nepheline syenite t —
2529.30.00.50 US 10-digit Other t —
2530 HS4 heading Mineral substances not elsewhere specified or included: —
2530.10.00.00 US 10-digit Vermiculite, perlite and chlorites, unexpanded kg Free / — / Free
2530.20 HS6 subheading Kieserite, epsom salts (natural magnesium sulfates): —
2530.20.10.00 US 10-digit Kieserite kg Free / — / Free
2530.20.20.00 US 10-digit Epsom salts kg Free / — / 20%
2530.90 HS6 subheading Other: —
2530.90.10.00 US 10-digit Natural cryolite; natural chiolite t Free / — / Free
2530.90.20.00 US 10-digit Natural micaceous iron oxides kg 2.9% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 20%
2530.90.80 US 8-digit Other Free / — / 0.3¢/kg *
2530.90.80.10 US 10-digit Celestite kg —
2530.90.80.15 US 10-digit Earth colors kg —
2530.90.80.50 US 10-digit Other kg —

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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