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HSChapter 55
U.S. imports of polyester staple fiber yarn mixed mainly with other fibers (nesoi), under 85% polyester, not for retail sale (HS 550959) totaled $167K in April 2026, traded with 9 countries.
Last updated: April 2026 dataA residual catch-all for polyester-dominant blended staple yarns below 85% polyester by weight where the secondary fiber is neither artificial staple fiber, wool/fine animal hair, nor cotton — covering blends with fibers such as flax, jute, or other natural fibers not elsewhere specified. The single US tariff line is 5509590000. China leads US import supply for this heading, followed by Mexico and Canada. Because this is an NESOI (not elsewhere specified or included) category, importers must first confirm that the secondary fiber does not qualify the yarn for a more specific subheading before defaulting to 550959.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
If the secondary fiber is not artificial staple fiber (viscose, modal, lyocell), wool, fine animal hair, or cotton, the yarn defaults to 550959. Examples include blends with flax, jute, ramie, or other natural fibers not covered by the specific subheadings. Importers should work through the subheadings in order — 550951 through 550953 — before concluding that 550959 applies.
Imports of synthetic staple fiber yarns from China may be subject to Section 301 tariffs, which apply in addition to the normal column 1 duty rate. Importers sourcing polyester-blend yarns from China under 550959 should confirm current Section 301 applicability and factor those additional costs into landed-cost calculations. Diversifying to Mexico or Canada — both also among the top suppliers — can reduce Section 301 exposure for qualifying goods under USMCA.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $125K | -- | -$125K |
| CANADA | $20K | $5K | -$15K |
| MEXICO | -- | $24K | +$24K |
| NETHERLANDS | $23K | -- | -$23K |
| FRANCE | -- | -- | -- |
Monthly import values over time
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