HTS 2934.99.03.00: US import duty from China
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Other, Aromatic or modified aromatic, 2-Acetylbenzo(<i>b</i>)thiophene; 3-Methylene-7-(2-phenoxyacetamido)- cephan-4-carboxylic acid, <i>p</i>-nitrobenzyl ester, 1-oxide; and Naphth[1,2-<i>d</i>]-[1,2,3]-oxadiazole-5-sulfonic acid and its sodium salt. Here is the full China to US duty stack and what it costs to land.
Duty rate & fees
| Charge | Rate |
|---|---|
| Base duty (MFN) | 0% |
| Total duty (on customs value) | 0% |
| Merchandise Processing Fee (MPF) | 0.3464% (min $33.58, max $651.50) |
| Harbor Maintenance Fee (HMF), ocean | 0.125% |
Worked example: $10,000 shipment
| Customs value | $10,000.00 |
| Base duty (MFN) | $0.00 |
| Merchandise Processing Fee | $34.64 |
| Harbor Maintenance Fee | $12.50 |
| Total landed cost | $10,047.14 |
Excludes freight and insurance. Run your exact numbers in the calculator →
FAQ
What is the import duty on HTS 2934.99.03.00 from China?
Goods classified under HTS 2934.99.03.00 (Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Other, Aromatic or modified aromatic, 2-Acetylbenzo(<i>b</i>)thiophene; 3-Methylene-7-(2-phenoxyacetamido)- cephan-4-carboxylic acid, <i>p</i>-nitrobenzyl ester, 1-oxide; and Naphth[1,2-<i>d</i>]-[1,2,3]-oxadiazole-5-sulfonic acid and its sodium salt) have a duty of 0% of the customs value on the China to US lane (base rate plus any Section 301 tariff), plus the Merchandise Processing Fee (0.3464%, min $33.58, max $651.50) and, for ocean shipments, the Harbor Maintenance Fee (0.125%).
What does HTS code 2934.99.03.00 cover?
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Other, Aromatic or modified aromatic, 2-Acetylbenzo(<i>b</i>)thiophene; 3-Methylene-7-(2-phenoxyacetamido)- cephan-4-carboxylic acid, <i>p</i>-nitrobenzyl ester, 1-oxide; and Naphth[1,2-<i>d</i>]-[1,2,3]-oxadiazole-5-sulfonic acid and its sodium salt. US Customs and Border Protection determines the final classification at entry.
How much does it cost to import HTS 2934.99.03.00 from China?
On a $10,000 shipment, the estimated total landed cost is $10,047, about 0.5% in duty and fees. Use the calculator for your exact value, quantity, and shipping mode.
Related codes in heading 2934
- 2934.10.10.00Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure, Aromatic or modified aromatic, Products described in additional U.S. note 3 to section VI
- 2934.10.20.00Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure, Aromatic or modified aromatic, Other
- 2934.10.70.00Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure, Other, 4,5-Dichloro-2-<i>n</i>-octyl-4-isothiazolin-3-one; Ethyl 2-(2-aminothiazol-4-yl)-2- hydroxyiminoacetate; Ethyl 2-(2-aminothiazol-4-yl)-2- methoxyiminoacetate; 2-Methyl-4-isothiazolin- 3-one; 2-<i>n</i>-Octyl-4-isothiazolin-3-one; and Thiothiamine hydrochloride
- 2934.10.90.00Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure, Other, Other
- 2934.20.05.00Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Compounds containing in the structure a benzothiazole ring-system (whether or not hydrogenated), not further fused, <i>N</i>-<i>tert</i>-Butyl-2-benzothiazolesulfenamide
- 2934.20.10.00Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Compounds containing in the structure a benzothiazole ring-system (whether or not hydrogenated), not further fused, 2,2'-Dithiobisbenzothiazole
- 2934.20.15.00Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Compounds containing in the structure a benzothiazole ring-system (whether or not hydrogenated), not further fused, 2-Mercaptobenzothiazole; and<i>N</i>-(Oxydiethylene)benzothiazole-2-sulfenamide
- 2934.20.20.00Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Compounds containing in the structure a benzothiazole ring-system (whether or not hydrogenated), not further fused, 2-Mercaptobenzothiazole, sodium salt (2-Benzothiazolethiol, sodium salt)
Estimates for planning only. Final classification and duty are determined by U.S. Customs and Border Protection at entry. Rates from USITC HTSUS 2026-06-15-cn-us. The IEEPA reciprocal tariff was struck down (SCOTUS, 2026-02-20) and is excluded. Not legal or customs-broker advice.