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 38 — Miscellaneous chemical products · Section VI

Entries: 284

Code Level Official description Unit US duty (MFN / pref. / col.2)
3801 HS4 heading Artificial graphite; colloidal or semi-colloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures: —
3801.10 HS6 subheading Artificial graphite: —
3801.10.10.00 US 10-digit Plates, rods, powder and other forms, wholly or partly manufactured, for manufacturing into brushes for electric generators, motors or other machines or appliances kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 45%
3801.10.50 US 8-digit Other Free / — / 10%
3801.10.50.10 US 10-digit Surface-modified spherical graphite kg —
3801.10.50.90 US 10-digit Other kg —
3801.20.00.00 US 10-digit Colloidal or semi-colloidal graphite kg Free / — / 10% *
3801.30.00.00 US 10-digit Carbonaceous pastes for electrodes and similar pastes for furnace linings kg 4.9% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 30%
3801.90.00 US 8-digit Other 4.9% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 45%
3801.90.00.10 US 10-digit Active anode material containing silicon kg —
3801.90.00.50 US 10-digit Other kg —
3802 HS4 heading Activated carbon; activated natural mineral products; animal black, including spent animal black: —
3802.10.00 US 8-digit Activated carbon 4.8% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 45%
3802.10.00.10 US 10-digit Derived from coal kg —
3802.10.00.20 US 10-digit Derived from coconut kg —
3802.10.00.50 US 10-digit Other kg —
3802.90 HS6 subheading Other: —
3802.90.10.00 US 10-digit Bone black kg 5.8% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 20%
3802.90.20.00 US 10-digit Activated clays and activated earths kg 2.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 0.6¢/kg +30%
3802.90.50.00 US 10-digit Other kg 4.8% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 45%
3803.00.00.00 US 10-digit Tall oil, whether or not refined kg Free / — / 20%
3804.00 HS6 subheading Residual lyes from the manufacture of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulfonates, but excluding tall oil of heading 3803: —
3804.00.10.00 US 10-digit Lignin sulfonic acid and its salts kg Free / — / 20%
3804.00.50.00 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% *
3805 HS4 heading Gum, wood or sulfate turpentine and other terpenic oils produced by the distillation or other treatment of coniferous woods; crude dipentene; sulfite turpentine and other crude para-cymene; pine oil containing alpha-terpineol as the main constituent: —
3805.10.00.00 US 10-digit Gum, wood or sulfate turpentine oils liters 5% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 5%
3805.90 HS6 subheading Other: —
3805.90.10.00 US 10-digit Pine oil kg Free / — / 25%
3805.90.50.00 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%
3806 HS4 heading Rosin and resin acids, and derivatives thereof; rosin spirit and rosin oils; run gums: —
3806.10.00 US 8-digit Rosin and resin acids 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 5%
3806.10.00.10 US 10-digit Gum rosin kg —
3806.10.00.50 US 10-digit Other kg —
3806.20.00.00 US 10-digit Salts of rosin, of resin acids or of derivatives of rosin or resin acids, other than salts of rosin adducts kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3806.30.00.00 US 10-digit Ester gums kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 57%
3806.90.00.00 US 10-digit Other kg 4.2% / Free (A,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG) / 15.4¢/kg + 57%
3807.00.00.00 US 10-digit Wood tar; wood tar oils; wood creosote; wood naphtha; vegetable pitch; brewers' pitch and similar preparations based on rosin, resin acids or on vegetable pitch kg 0.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 0.2%
3808 HS4 heading Insecticides, rodenticides, fungicides, herbicides, antisprouting products and plant-growth regulators, disinfectants and similar products, put up in forms or packings for retail sale or as preparations or articles (for example, sulfur-treated bands, wicks and candles, and flypapers): —
3808.52.00.00 US 10-digit DDT (ISO) (clofenatone (INN)), in packings of a net weight content not exceeding 300 g kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.59 HS6 subheading Other: —
3808.59.10.00 US 10-digit Containing any aromatic or modified aromatic pesticide kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.59.40.00 US 10-digit Disinfectants kg 5% / Free (A,AU,BH, CL,CO,D,E,IL, JO,K,KR,MA,OM,P, PA,PE,S,SG) / 25%
3808.59.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.61 HS6 subheading In packings of a net weight content not exceeding 300 g: —
3808.61.10.00 US 10-digit Containing any aromatic or modified aromatic pesticide kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.61.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.62 HS6 subheading In packings of a net weight content exceeding 300 g but not exceeding 7.5 kg: —
3808.62.10.00 US 10-digit Containing any aromatic or modified aromatic pesticide kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.62.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.69 HS6 subheading Other: —
3808.69.10.00 US 10-digit Containing any aromatic or modified aromatic pesticide kg 6.5% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.69.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.91 HS6 subheading Insecticides: —
3808.91.10.00 US 10-digit Fly ribbons (ribbon fly catchers) kg 2.8% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 35%
3808.91.15.00 US 10-digit Mixtures of N-[[(4-chlorophenyl)amino]- carbonyl]-2,6-difluorobenzamide and inert substances kg Free / — / 15.4¢/kg + 31%
3808.91.25.01 US 10-digit Other kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.91.30.00 US 10-digit Containing an inorganic substance kg 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.91.50.01 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.92 HS6 subheading Fungicides: —
3808.92.05.00 US 10-digit Mixtures of dinocap and application adjuvants kg Free / — / 15.4¢/kg + 31%
3808.92.15.00 US 10-digit Other kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.92.24.00 US 10-digit Maneb; Zineb; Mancozeb; and Metiram kg Free / — / 25%
3808.92.28.00 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%
3808.92.30.00 US 10-digit Containing an inorganic substance kg 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.92.50 US 8-digit Other 5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.92.50.40 US 10-digit Formulated fungicides containing any 3-iodoprop-2-yn-1-yl butylcarbamate(IPBC) kg —
3808.92.50.80 US 10-digit Other kg —
3808.93 HS6 subheading Herbicides, anti-sprouting products and plant-growth regulators: —
3808.93.05.00 US 10-digit Mixtures of 2,6-dichlorobenzonitrile and inerts; Mixtures of 3,5-dichloro-N-(1,1-dimethyl-2- propynyl) benzamide (Pronamide) and application adjuvants; Mixtures of 2-[(1-ethoxyimino)butyl]-5-[2- ethylthiopropyl]-3-hydroxy-2-cyclohexen-1- one (Sethoxydim) and application adjuvants; Mixtures of ethyl 2-[4-[(6-chloro-2- benzoxazolyl)oxy]phenoxy]propanoate (Fenoxaprop-ethyl) and isooctyl 2,4-dichlorophenoxyacetate; Mixtures of isooctyl 2-methyl-4-chlorophen- oxyacetate and application adjuvants kg Free / — / 15.4¢/kg + 31%
3808.93.15.00 US 10-digit Other kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.93.20.00 US 10-digit Containing an inorganic substance kg 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.93.50 US 8-digit Other 5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.93.50.10 US 10-digit Mixtures of 2-amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) or its salts or esters and application adjuvants kg —
3808.93.50.20 US 10-digit Mixtures of N-(phosphonomethyl) glycine (glyphosate) or its salts or esters and application adjuvants kg —
3808.93.50.40 US 10-digit Other kg —
3808.94 HS6 subheading Disinfectants: —
3808.94.10.00 US 10-digit Containing any aromatic or modified aromatic disinfectant kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.94.50 US 8-digit Other 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.94.50.10 US 10-digit Wipes, other than paper wipes or nonwoven wipes, impregnated with alcohol or other disinfectants kg —
3808.94.50.50 US 10-digit Hydrogen peroxide put up in disinfectant preparations for sanitizing or disinfecting surfaces. kg —
3808.94.50.80 US 10-digit Alcohol-based hand sanitizer containing 60 percent or more by weight of ethanol, of a kind described in statistical note 1 to this chapter kg —
3808.94.50.95 US 10-digit Other kg —
3808.99 HS6 subheading Other: —
3808.99.04.00 US 10-digit Mixtures of 1,1-bis(4-chlorophenyl)-2,2,2- trichloroethanol (Dicofol) and application adjuvants kg Free / — / 15.4¢/kg + 31%
3808.99.08.00 US 10-digit Other kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 31%
3808.99.30.00 US 10-digit Formulated biocides based on 2-methyl-4-isothiazolin-3-one, or 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, or mixtures of 5-chloro-2-methyl-4- isothiazolin-3-one and 2-methyl-4- isothiazolin-3-one; and Metaldehyde kg Free / — / 25%
3808.99.70.00 US 10-digit Containing an inorganic substance kg 5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
3808.99.95.01 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3809 HS4 heading Finishing agents, dye carriers to accelerate the dyeing or fixing of dyestuffs and other products and preparations (for example, dressings and mordants), of a kind used in the textile, paper, leather or like industries, not elsewhere specified or included: —
3809.10.00.00 US 10-digit With a basis of amylaceous substances kg 2.2¢/kg + 3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 17.6¢/kg + 25%
3809.91.00.00 US 10-digit Of a kind used in the textile or like industries kg 6% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 3% (JP) / 25%
3809.92 HS6 subheading Of a kind used in the paper or like industries: —
3809.92.10.00 US 10-digit Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances kg 6.5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 60%
3809.92.50.00 US 10-digit Other kg 6% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3809.93 HS6 subheading Of a kind used in the leather or like industries: —
3809.93.10.00 US 10-digit Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances kg 6.5% / Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 60%
3809.93.50.00 US 10-digit Other kg 6% / Free (A,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3810 HS4 heading Pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods: —
3810.10.00.00 US 10-digit Pickling preparations for metal surfaces; soldering, brazing or welding powders and pastes consisting of metal and other materials kg 5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3810.90 HS6 subheading Other: —
3810.90.10.00 US 10-digit Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances kg 6.5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 3.7¢/kg + 60%
3810.90.20.00 US 10-digit Consisting wholly of inorganic substances kg Free / — / 25%
3810.90.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3811 HS4 heading Antiknock 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: —
3811.11 HS6 subheading Based on lead compounds: —
3811.11.10.00 US 10-digit Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead kg Free / — / 30%
3811.11.50.00 US 10-digit Other kg Free / — / 25%
3811.19.00.00 US 10-digit Other kg 6.5% / Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG) / 3.7¢/kg + 60%
3811.21.00.00 US 10-digit Containing petroleum oils or oils obtained from bituminous minerals kg 6.5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 60%
3811.29.00.00 US 10-digit Other kg 6.5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25% *
3811.90.00.00 US 10-digit Other kg 6.5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 3.7¢/kg + 60%
3812 HS4 heading Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics: —
3812.10 HS6 subheading Prepared rubber accelerators: —
3812.10.10.00 US 10-digit Containing any aromatic or modified aromatic rubber accelerator kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 3.7¢/kg + 60%
3812.10.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3812.20 HS6 subheading Compound plasticizers for rubber or plastics: —
3812.20.10.00 US 10-digit Containing any aromatic or modified aromatic plasticizer kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 57%
3812.20.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3812.31.00.00 US 10-digit Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) / 3.7¢/kg + 60%
3812.39 HS6 subheading Other: —
3812.39.20.00 US 10-digit Mixtures of N,N'-diaryl-p-phenylenediamines kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 3.7¢/kg + 60%
3812.39.30.00 US 10-digit Master batches of poly[nitrilomethanetetraaryl- nitrilo[2,4,6- tris(1-methylethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)phenyl]-ω- [[[[2,6-bis(1-methylethyl)phenyl]amino]- methylene]amino]carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methylethyl)- benzene homopolymer with polyethylene, polyethylene terephthalate, or thermoplastic polyurethanes;Master batches of 3-(2H-benzotriazol-2-yl)-5- (tert-butyl)-4-hydroxybenzenepropanoic acid, C7-C9 branched or linear alkyl esters; andMaster batches of α-[3-[3-(2H-benzotriazol-2- yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1- oxopropyl-ω-[3-[3-(2H-benzotriazol-2-yl)-5- (1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxo- propyl] poly(oxyethylene) kg Free / — / 3.7¢/kg + 60%
3812.39.60.00 US 10-digit Other kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 3.7¢/kg + 60%
3812.39.70.00 US 10-digit Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate kg Free / — / 25%
3812.39.90.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3813.00 HS6 subheading Preparations and charges for fire extinguishers; charged fire-extinguishing grenades: —
3813.00.10.00 US 10-digit Consisting wholly of inorganic substances kg Free / — / 25%
3813.00.50.00 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) / 20%
3814.00 HS6 subheading Organic composite solvents and thinners, not elsewhere specified or included; prepared paint or varnish removers: —
3814.00.10.00 US 10-digit Containing 5 percent or more but not more than 25 percent by weight of one or more aromatic or modified aromatic substances kg 6.5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 3.7¢/kg + 60%
3814.00.20.00 US 10-digit Containing more than 25 percent by weight of one or more aromatic or modified aromatic substances kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 15.4¢/kg + 43.5%
3814.00.50 US 8-digit Other 6% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3814.00.50.10 US 10-digit Containing methyl chloroform (1,1,1-trichloro- ethane) or carbon tetrachloride kg —
3814.00.50.90 US 10-digit Other kg —
3815 HS4 heading Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: —
3815.11.00.00 US 10-digit With nickel or nickel compounds as the active substance kg Free / — / 25%
3815.12.00 US 8-digit With precious metal or precious metal compounds as the active substance Free / — / 25%
3815.12.00.10 US 10-digit With platinum group metals as the active substance kg —
3815.12.00.90 US 10-digit Other kg —
3815.19.00.00 US 10-digit Other kg Free / — / 25% *
3815.90 HS6 subheading Other: —
3815.90.10.00 US 10-digit Of bismuth, of tungsten or of vanadium kg 6.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 40%
3815.90.20.00 US 10-digit Of mercury or of molybdenum kg 2.8% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 18%
3815.90.30.00 US 10-digit Other kg Free / — / 25%
3815.90.50.00 US 10-digit Other kg 5% / Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) / 25%
3816 HS4 heading Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801: —
3816.00.10.00 US 10-digit Dolomite ramming mix t Free / — / 30%
3816.00.20 US 8-digit Other 3% / Free (A, AU, BH, CL, CO,D,E, IL, JO, KR, MA, OM, P, PA, PE, S, SG) / 30%
3816.00.20.10 US 10-digit Clay kg —
3816.00.20.50 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.

More tools