China HS → US HTS
China HS 2937.2311 (孕马结合雌激素): US HTS candidates & duty rates
China tariff line for "孕马结合雌激素" shares the international HS6 anchor 293723 with 10 US HTS candidates below. Compare descriptions, then calculate landed duty.
Updated
China HS 2937.2311 most commonly maps to US HTS 2937.23.10. Total duty rate from China (MFN + Chapter 99 overlays): about 0%. Verify the description before filing.
China tariff line facts
| China HS line | 2937.2311 |
|---|---|
| Description | 孕马结合雌激素 |
| Category path | 天然或合成再制的激素、前列腺 > 甾族激素及其衍生物和结构类 > 雌（甾）激素和孕激素 > 动物源的 > 孕马结合雌激素 |
| Shared HS6 | 293723 |
| China MFN rate (reference) | 4 |
| Schedule version | 2026 |
US HTS candidates (10)
| US HTS | Description | General (MFN) | Total from China |
|---|---|---|---|
| 2937.23.10 | Obtained directly or indirectly from animal or vegetable materials | Free | 0% |
| 2937.23.50 | Other | Free | 0% |
| 2937.23.10.10 | Estrogens | Free | 0% |
| 2937.23.10.20 | Progesterone | Free | 0% |
| 2937.23.25.00 | Estradiol benzoate; and Estradiol cyclopentylpropionate (Estradiol cypionate) | Free | 0% |
| 2937.23.50.10 | Estrogens | Free | 0% |
| 2937.23.50.20 | Progesterone | Free | 0% |
| 2937.23.10.50 | Other | Free | 0% |
| 2937.23.50.50 | Other | Free | 0% |
| 2937.23 | Estrogens and progestins: | — | — |
Total = MFN base + Section 301 / IEEPA / reciprocal overlays active for China origin. AD/CVD not included.
Frequently asked questions
Which US HTS code corresponds to China HS 2937.2311?
There is no one-to-one mapping: only the first six digits (HS6 293723) are shared internationally. Under this anchor the US schedule has 10 candidate lines; the most common is 2937.23.10. Match your product facts (material, use, construction) against the descriptions to pick the right one.
How much is US import duty for "孕马结合雌激素" from China?
Using the leading candidate 2937.23.10, the total rate from China is about 0% — MFN base plus the Chapter 99 overlays (Section 301 / IEEPA / reciprocal) active for China origin. Other candidates may differ, so verify classification first.
Why is China HS8 not identical to US HTS8?
The WCO Harmonized System is only agreed to six digits. China extends HS6 to 8/10-digit national lines for its own tariffs and statistics, and the US does the same with HTS8/HTS10 — the extensions are independent, so codes must be bridged via HS6.
How do I confirm the final HTS classification?
Compare the US line descriptions against your product facts, check CBP rulings for similar goods, and when in doubt request a binding ruling. The bridge tool lets you re-run this query and compare all candidates side by side.
Rate change alerts
Get an email when US tariffs affecting HS6 293723 change (Section 301, IEEPA, Federal Register actions).