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Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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HS 5509.99

Synthetic staple fiber yarn (not sewing thread), not for retail sale, under 85% (wt.) of synthetic staple fibers not elsewhere specified mixed with other fibers not elsewhere specified

In short

  • The US imported $3.7M of this product over the 12 months to August 2026, down 22% on the year before.
  • Canada is the largest supplier, with 80.6% of US imports; Turkey is next, with 8.3%.
  • Thailand is the cheapest main supplier before and after freight and duty, landing at $7.04/kg.
  • Duty paid averaged 5.0% of the value of imports in August 2026, down 4.8 points on a year earlier.
  • Korea, South is gaining share: 4.6% over the last 12 months, up from 2.6%.
  • US exports were $570K over the last 12 months; the largest market is China, with 49.3%.

US imports, Aug 2026

$354K

↑ +29% vs Aug 2025

Last 12 months

$3.7M

↓ −22% vs the 12 months before

Average duty paid

5.0%

↓ −4.8 pts vs Aug 2025

Top supplier

Canada

80.6% of US imports

US imports by month

The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAug
Show the numbers
MonthUS imports
August 2025$275K
September 2025$354K
October 2025$451K
November 2025$489K
December 2025$324K
January 2026$258K
February 2026$349K
March 2026$349K
April 2026$213K
May 2026$133K
June 2026$338K
July 2026$135K
August 2026$354K

What changed

  • US imports were $354K in August 2026, up 162% from July 2026 and up 29% from August 2025.
  • Over the 12 months to August 2026 they totalled $3.7M, down 22% on the 12 months before.
  • Biggest moves in market share since July 2026: Canada up from 48.5% to 80.6%, Korea, South down from 27.0% to 0.0%.
  • Average price from China fell 97% since July 2026, to $14.64/kg.
  • Duty paid on imports from China fell from 48.2% to 46.0% of their value since July 2026.

US trade by year

US imports were $3.7M in the 12 months to Aug 2026, down 12% on the 12 months to Aug 2017. US exports were $570K, down 83%. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

2017201820192020202120222023202420252026Duty ↓Duty ↓Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$4.3M
12 months to Aug 2018$4.6M
12 months to Aug 2019$4.5M
12 months to Aug 2020$3.5M
12 months to Aug 2021$5.2M
12 months to Aug 2022$2.8M
12 months to Aug 2023$4.7M
12 months to Aug 2024$2.7M
12 months to Aug 2025$4.8M
12 months to Aug 2026$3.7M
  • Canada
  • Korea, South
  • Turkey
  • China
  • All countries
Share of US imports
Show the numbers
PeriodCanadaKorea, SouthTurkeyChina
12 months to Aug 201769.4%0.0%0.0%1.6%
12 months to Aug 201859.8%0.0%0.0%2.8%
12 months to Aug 201947.8%0.0%0.0%13.6%
12 months to Aug 202075.3%0.0%0.0%10.6%
12 months to Aug 202180.3%0.0%0.0%13.0%
12 months to Aug 202260.9%0.0%10.6%7.2%
12 months to Aug 202375.5%0.1%0.3%5.6%
12 months to Aug 202480.4%9.1%0.0%2.8%
12 months to Aug 202588.4%2.6%1.6%1.0%
12 months to Aug 202684.4%4.6%2.9%2.6%
Duty paid, % of value
Show the numbers
PeriodCanadaKorea, SouthTurkeyChinaAll countries
12 months to Aug 20170.0%n/an/a9.6%2.8%
12 months to Aug 20180.0%n/an/a9.8%3.4%
12 months to Aug 20190.1%n/an/a18.1%5.9%
12 months to Aug 20200.0%n/an/a35.6%5.0%
12 months to Aug 20210.0%n/an/a35.4%5.3%
12 months to Aug 20220.0%n/a9.0%35.9%5.6%
12 months to Aug 20230.0%0.0%12.9%36.9%3.8%
12 months to Aug 20240.0%2.4%13.2%35.1%1.8%
12 months to Aug 20250.0%5.5%23.2%67.8%2.2%
12 months to Aug 20260.0%10.8%26.8%62.4%3.8%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$3.7M−22%3.8%+1.5 pts$570K−77%
12 months to Aug 2025$4.8M+78%2.2%+0.4 pts$2.5M−55%
12 months to Aug 2024$2.7M−42%1.8%−2.0 pts$5.5M−16%
12 months to Aug 2023$4.7M+70%3.8%−1.8 pts$6.5M−40%
12 months to Aug 2022$2.8M−47%5.6%+0.3 pts$10.8M+113%
12 months to Aug 2021$5.2M+49%5.3%+0.3 pts$5.1M−59%
12 months to Aug 2020$3.5M−22%5.0%−0.8 pts$12.4M−15%
12 months to Aug 2019$4.5M−2.0%5.9%+2.5 pts$14.7M+163%
12 months to Aug 2018$4.6M+7.7%3.4%+0.6 pts$5.6M+71%
12 months to Aug 2017$4.3M2.8%$3.3M

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.

CountryUS importsShareAverage priceDuty paidLast 13 months
Canada$286K80.6%+15.9 pts$47.44/kg+11%0.0%0.0 pts
Turkey$29K8.3%new$40.58/kg25.7%
China$22K6.3%−2.7 pts$14.64/kg+0.9%46.0%−22.2 pts
Mexico$17K4.7%−1.5 pts$18.50/kg+5.6%0.0%0.0 pts
All countries$354K100.0%$38.58/kg+86%5.0%−4.8 pts

The 3 largest suppliers had 92.0% of US imports over the last 12 months.

Landed cost by origin

What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.

  • Price
  • Freight and insurance
  • Duty
CountryPriceFreight and insuranceDutyLanded costMake-up
Thailand$5.59/kg$0.14/kg2.6% of price$1.30/kg23.2% of price$7.04/kg
Mexico$19.58/kg$0.52/kg2.7% of price$0.00/kg0.0% of price$20.10/kg+12%
Korea, South$27.43/kg$3.51/kg12.8% of price$1.58/kg5.7% of price$32.52/kg−1.5%
Canada$44.57/kg$0.15/kg0.3% of price$0.02/kg0.0% of price$44.74/kg+0.2%
Turkey$40.58/kg$1.38/kg3.4% of price$10.42/kg25.7% of price$52.38/kg+1583%
All countries$29.94/kg$0.53/kg1.8% of price$1.26/kg4.2% of price$31.73/kg−4.1%

Landed at a US port, Thailand was cheapest, at $7.04/kg: 65.0% below Mexico.

Landed cost from Turkey rose 1583% on a year earlier, to $52.38/kg, mostly on price: $2.47/kg then, $40.58/kg now.

How the market is shifting

Korea, South gained the most share: 4.6% of US imports over the last 12 months, up from 2.6% in the 12 months before. Canada lost the most: 84.4%, down from 88.4%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months.

  • Canada
  • Korea, South
  • Turkey
  • China
  • All countries
Share of US imports
Show the numbers
MonthCanadaKorea, SouthTurkeyChina
September 202494.2%1.0%0.0%0.0%
October 202498.4%0.0%0.0%0.0%
November 202490.8%0.0%0.0%0.0%
December 202493.6%0.0%0.0%4.6%
January 202578.9%18.5%0.0%0.0%
February 202587.8%9.2%0.0%0.0%
March 2025100.0%0.0%0.0%0.0%
April 202595.4%0.0%2.8%1.6%
May 202582.5%0.0%10.5%0.0%
June 202580.6%1.7%0.0%0.0%
July 202587.7%0.0%0.2%0.9%
August 202564.7%0.0%0.0%9.0%
September 202585.6%0.0%10.1%0.7%
October 202598.7%0.0%0.0%0.1%
November 202566.8%17.5%0.0%13.6%
December 202592.0%0.0%0.0%0.0%
January 202691.8%0.0%0.0%2.2%
February 202688.1%0.0%10.4%0.1%
March 202697.2%0.0%2.4%0.0%
April 202689.2%0.1%0.0%0.1%
May 202675.4%13.4%0.0%0.0%
June 202678.8%9.8%0.0%0.0%
July 202648.5%27.0%0.0%0.4%
August 202680.6%0.0%8.3%6.3%
Duty paid, % of value
Show the numbers
MonthCanadaKorea, SouthTurkeyChinaAll countries
September 20240.0%13.2%n/a34.1%0.5%
October 20240.0%n/an/a34.0%0.7%
November 20240.0%n/an/an/a1.2%
December 20240.0%n/an/a37.0%1.9%
January 20250.0%0.0%n/an/a0.3%
February 20250.0%13.2%n/an/a1.2%
March 20250.0%n/an/an/a0.0%
April 20250.0%n/a23.2%179.0%3.6%
May 20250.0%n/a23.2%n/a3.9%
June 20250.0%23.2%n/an/a4.1%
July 20250.0%n/a19.0%71.3%3.0%
August 20250.0%n/an/a68.2%9.8%
September 20250.0%n/a28.2%71.0%3.9%
October 20250.0%n/an/a64.0%0.9%
November 20250.0%15.0%n/a68.2%12.2%
December 20250.0%n/an/an/a1.4%
January 20260.0%n/an/an/a0.9%
February 20260.0%n/a28.2%54.6%3.8%
March 20260.0%n/a19.0%n/a0.5%
April 20260.0%23.3%n/a68.2%2.5%
May 20260.0%10.0%n/an/a1.8%
June 20260.0%10.0%n/an/a2.5%
July 20260.4%1.9%n/a48.2%6.5%
August 20260.0%n/a25.7%46.0%5.0%

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

  1. March 2022 · Duty paid: all countries 2.6% → 10.1%.
  2. February 2021 · Duty paid: all countries 8.5% → 1.1%.
  3. January 2020 · Duty paid: all countries 0.6% → 8.0%.
  4. April 2019 · Duty paid: all countries 8.1% → 2.6%.

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. Alexandria Bay, NY$1.2M · 31.2%
  2. Port Huron, MI$955K · 25.5%
  3. Champlain-Rouses Point, NY$783K · 20.9%
  4. Derby Line, VT$228K · 6.1%
  5. Los Angeles, CA$201K · 5.4%

Where US exports go

US exports were $17K in August 2026, down 91% from August 2025, and $570K over the last 12 months, down 77% on the 12 months before. Fastest-growing market with 3% or more of US exports: China, up 11%.

MarketLast 12 monthsSharevs 12 months before
China$281K49.3%+11%
Canada$179K31.4%−65%
Sri Lanka$88K15.4%−72%
Tunisia$14K2.5%new
Italy$4K0.8%new
Mexico$3K0.5%−45%
All countries$570K100.0%−77%

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 102 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
Cambodia$37.4Min 2025+15%$00.0%
Algeria$7.3Min 2024n/a$00.0%
China$7.0Min 2025+8.1%$437K6.2%
Thailand$6.5Min 2025−10%$7730.0%
Germany$6.2Min 2025+23%$00.0%
Spain$4.8Min 2025+103%$990.0%
Italy$4.3Min 2025+53%$00.0%
Hong Kong$4.0Min 2025+89%$00.0%

The biggest market outside the US is Cambodia, which imported $37.4M of this product in 2025, none of it from the US.

Of these, imports into Spain grew fastest: up 103% from 2024 to 2025.

Other products under heading 5509: yarn (other than sewing thread) of synthetic staple fibers, not put up for retail sale. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Synthetic staple fiber yarn (except sewing thread), not for retail sale, under 85% (wt.) of polyester mixed mainly with cottonHS 5509.53$5.2M$246.8M
Synthetic staple fiber yarn (not sewing thread), not for retail sale, under 85% (wt.) of synthetic staple fibers not elsewhere specified mixed mainly with cottonHS 5509.92$55K$52.6M
Synthetic staple fiber yarn (except sewing thread), not for retail sale, 85% or more (wt.) of polyesters, multiple or cabled yarnHS 5509.22$21.0M$4.4M
Synthetic staple fiber yarn (except sewing thread), not for retail sale, 85% or more (wt.) of polyesters, single yarnHS 5509.21$16.2M$6.2M
Synthetic staple fiber yarn (except sewing thread), not for retail sale, 85% or more (wt.) of acrylics or modacrylics, multiple or cabled yarnHS 5509.32$10.8M$278K
Synthetic staple fiber yarn (not sewing thread), not for retail sale, under 85% (wt.) of acrylics or modacrylics mixed mainly with cottonHS 5509.62$8.1M$76K
Synthetic staple fiber yarn (except sewing thread), not for retail sale, 85% or more (wt.) of nylon or other polyamides, single yarnHS 5509.11$6.4M$1.5M
Synthetic staple fiber yarn (except sewing thread), not for retail sale, 85% or more (wt.) of synthetic staple fibers not elsewhere specified, multiple or cabled yarnHS 5509.42$7.4M$207K
About these figures
  • Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
  • US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
  • Average price is customs value divided by quantity (kilograms), across all of the product's 10-digit lines.
  • Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
  • Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
  • Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

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