China HS → US HTS
China HS 3913.1000 (藻酸及其盐和酯): US HTS candidates & duty rates
China tariff line for "藻酸及其盐和酯" shares the international HS6 anchor 391310 with 1 US HTS candidate below. Compare descriptions, then calculate landed duty.
Updated
China HS 3913.1000 most commonly maps to US HTS 3913.10.00.00. Total duty rate from China (MFN + Chapter 99 overlays): about 11.70%. Verify the description before filing.
China tariff line facts
| China HS line | 3913.1000 |
|---|---|
| Description | 藻酸及其盐和酯 |
| Category path | 初级形状的其他税目未列名的天 然聚合物（例如藻酸）及改性天 然聚合物（例如，硬化蛋白、天 然橡胶的化学衍生物） > 藻酸及其盐和酯 |
| Shared HS6 | 391310 |
| China MFN rate (reference) | 10 |
| Schedule version | 2026 |
US HTS candidates (1)
| US HTS | Description | General (MFN) | Total from China |
|---|---|---|---|
| 3913.10.00.00 | Alginic acid, its salts and esters | 4.2% | 11.70% |
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 3913.1000?
There is no one-to-one mapping: only the first six digits (HS6 391310) are shared internationally. Under this anchor the US schedule has 1 candidate line; the most common is 3913.10.00.00. Match your product facts (material, use, construction) against the descriptions to pick the right one.
How much is US import duty for "藻酸及其盐和酯" from China?
Using the leading candidate 3913.10.00.00, the total rate from China is about 11.70% — 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.