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China HS → US HTS

China HS 5509.2100 (单纱): US HTS candidates & duty rates

China tariff line for "单纱" shares the international HS6 anchor 550921 with 1 US HTS candidate below. Compare descriptions, then calculate landed duty.

Updated

Quick answer

China HS 5509.2100 most commonly maps to US HTS 5509.21.00.00. Total duty rate from China (MFN + Chapter 99 overlays): about 34.70%. Verify the description before filing.

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China tariff line facts

China HS line5509.2100
Description单纱
Category path合成纤维短纤纺制的纱线（缝纫 线除外），非供零售用 > 按重量计聚酯短纤含量在85％ 及以上 > 单纱
Shared HS6550921
China MFN rate (reference)5
Schedule version2026

US HTS candidates (1)

US HTSDescriptionGeneral (MFN)Total from China
5509.21.00.00 Single yarn (604) 9.7% 34.70%

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 5509.2100?

There is no one-to-one mapping: only the first six digits (HS6 550921) are shared internationally. Under this anchor the US schedule has 1 candidate line; the most common is 5509.21.00.00. Match your product facts (material, use, construction) against the descriptions to pick the right one.

How much is US import duty for "单纱" from China?

Using the leading candidate 5509.21.00.00, the total rate from China is about 34.70% — 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.