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

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HS 5509.31

Synthetic staple fiber yarn (except sewing thread), not for retail sale, 85% or more (wt.) of acrylics or modacrylics, single yarn

In short

  • The US imported $2.1M of this product over the 12 months to August 2026, down 16% on the year before.
  • Romania is the largest supplier, with 39.0% of US imports; Turkey is next, with 38.0%.
  • Indonesia is the cheapest main supplier before and after freight and duty, landing at $3.73/kg.
  • Duty paid averaged 12.3% of the value of imports in August 2026, down 3.0 points on a year earlier.
  • Romania is gaining share: 11.1% over the last 12 months, up from 0.0%.
  • US exports were $541K over the last 12 months; the largest market is Slovenia, with 59.2%.

US imports, Aug 2026

$240K

↑ +121% vs Aug 2025

Last 12 months

$2.1M

↓ −16% vs the 12 months before

Average duty paid

12.3%

↓ −3.0 pts vs Aug 2025

Top supplier

Romania

39.0% 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. 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.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugDuty ↓
Show the numbers
MonthUS imports
August 2025$109K
September 2025$354K
October 2025$19K
November 2025$131K
December 2025$116K
January 2026$71K
February 2026$281K
March 2026$227K
April 2026$276K
May 2026$164K
June 2026$57K
July 2026$137K
August 2026$240K

What changed

  • US imports were $240K in August 2026, up 75% from July 2026 and up 121% from August 2025.
  • Over the 12 months to August 2026 they totalled $2.1M, down 16% on the 12 months before.
  • Biggest moves in market share since July 2026: Romania up from 4.5% to 39.0%, Canada down from 57.8% to 3.8%.
  • Average price from Guatemala fell 55% since July 2026, to $4.56/kg.
  • Duty paid by the main suppliers held within 2 points of July 2026.

US trade by year

US imports were $2.1M in the 12 months to Aug 2026, down 70% on the 12 months to Aug 2017. US exports were $541K, down 39%. 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 ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$6.8M
12 months to Aug 2018$5.0M
12 months to Aug 2019$6.2M
12 months to Aug 2020$3.1M
12 months to Aug 2021$1.9M
12 months to Aug 2022$2.2M
12 months to Aug 2023$3.3M
12 months to Aug 2024$1.6M
12 months to Aug 2025$2.5M
12 months to Aug 2026$2.1M
  • Guatemala
  • Canada
  • Turkey
  • Romania
  • All countries
Share of US imports
Show the numbers
PeriodGuatemalaCanadaTurkeyRomania
12 months to Aug 20173.1%31.2%16.6%0.0%
12 months to Aug 201814.7%20.7%22.6%0.0%
12 months to Aug 201927.7%17.1%26.1%0.0%
12 months to Aug 202017.6%23.7%28.0%0.0%
12 months to Aug 20217.2%28.9%42.2%0.0%
12 months to Aug 20221.1%32.9%47.8%0.0%
12 months to Aug 20230.4%59.5%28.3%0.7%
12 months to Aug 20247.5%30.7%36.3%0.0%
12 months to Aug 202529.3%33.1%24.7%0.0%
12 months to Aug 202636.0%25.0%13.7%11.1%
Duty paid, % of value
Show the numbers
PeriodGuatemalaCanadaTurkeyRomaniaAll countries
12 months to Aug 20170.0%0.0%9.0%n/a5.8%
12 months to Aug 20180.0%0.0%9.0%n/a5.6%
12 months to Aug 20190.0%0.0%9.0%n/a6.4%
12 months to Aug 20200.0%0.0%9.0%n/a5.0%
12 months to Aug 20212.0%0.0%9.0%n/a6.5%
12 months to Aug 20220.0%0.0%9.0%n/a6.6%
12 months to Aug 20233.2%0.0%9.0%9.0%3.6%
12 months to Aug 20240.0%0.0%9.0%n/a5.4%
12 months to Aug 20250.5%0.0%12.5%n/a5.1%
12 months to Aug 20265.2%0.0%23.0%14.9%10.3%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$2.1M−16%10.3%+5.2 pts$541K+124%
12 months to Aug 2025$2.5M+57%5.1%−0.3 pts$241K−34%
12 months to Aug 2024$1.6M−52%5.4%+1.8 pts$364K−42%
12 months to Aug 2023$3.3M+46%3.6%−3.1 pts$629K−46%
12 months to Aug 2022$2.2M+20%6.6%+0.1 pts$1.2M+20%
12 months to Aug 2021$1.9M−39%6.5%+1.5 pts$962K+100%
12 months to Aug 2020$3.1M−51%5.0%−1.4 pts$482K−35%
12 months to Aug 2019$6.2M+25%6.4%+0.8 pts$738K−24%
12 months to Aug 2018$5.0M−27%5.6%−0.2 pts$966K+9.4%
12 months to Aug 2017$6.8M5.8%$883K

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
Romania$94K39.0%new$5.36/kg10.0%
Turkey$91K38.0%−34.7 pts$6.93/kg+52%21.5%+2.5 pts
Guatemala$45K18.7%new$4.56/kg0.0%
Canada$9K3.8%−21.1 pts$15.90/kg+13%0.0%0.0 pts
China$1K0.5%−1.9 pts$2.90/kg+7.9%46.5%−17.5 pts
All countries$240K100.0%$5.79/kg+7.5%12.3%−3.0 pts

The 3 largest suppliers had 74.7% 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
Indonesia$2.88/kg$0.30/kg10.5% of price$0.55/kg19.0% of price$3.73/kg−62%
Guatemala$4.60/kg$1.01/kg21.9% of price$0.00/kg0.0% of price$5.61/kg−60%
Romania$5.36/kg$0.00/kg0.0% of price$0.60/kg11.2% of price$5.96/kg
Turkey$6.87/kg$1.37/kg19.9% of price$1.47/kg21.4% of price$9.71/kg+79%
Canada$14.54/kg$0.87/kg6.0% of price$0.00/kg0.0% of price$15.41/kg+18%
All countries$5.61/kg$0.60/kg10.7% of price$0.70/kg12.4% of price$6.91/kg−8.5%

Landed at a US port, Indonesia was cheapest, at $3.73/kg: 33.6% below Guatemala.

Landed cost from Turkey rose 79% on a year earlier, to $9.71/kg, mostly on price: $4.56/kg then, $6.87/kg now.

How the market is shifting

Romania gained the most share: 11.1% of US imports over the last 12 months, up from 0.0% in the 12 months before. Turkey lost the most: 13.7%, down from 24.7%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. 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.

  • Guatemala
  • Canada
  • Turkey
  • Romania
  • All countries
Share of US imports
Show the numbers
MonthGuatemalaCanadaTurkeyRomania
September 202434.2%40.4%11.9%0.0%
October 20240.0%38.6%39.1%0.0%
November 202467.2%11.7%0.0%0.0%
December 20240.0%54.3%9.2%0.0%
January 202561.6%5.3%31.5%0.0%
February 202542.4%13.9%43.7%0.0%
March 202547.6%28.8%20.2%0.0%
April 202541.5%44.9%8.7%0.0%
May 20258.4%52.6%22.4%0.0%
June 20253.2%35.0%34.1%0.0%
July 20251.1%50.4%22.4%0.0%
August 20250.0%24.9%72.7%0.0%
September 202563.1%10.6%21.4%0.1%
October 20250.0%71.3%3.4%0.0%
November 202560.3%0.0%20.7%0.0%
December 202542.6%26.4%23.1%0.0%
January 20260.0%19.5%68.2%0.0%
February 202660.3%18.7%0.7%2.6%
March 202634.2%52.3%0.0%4.4%
April 202619.3%35.2%0.5%24.2%
May 202629.7%39.9%0.4%18.3%
June 20260.0%0.0%7.4%27.5%
July 20260.6%57.8%3.8%4.5%
August 202618.7%3.8%38.0%39.0%
Duty paid, % of value
Show the numbers
MonthGuatemalaCanadaTurkeyRomaniaAll countries
September 20240.0%0.0%9.0%n/a2.3%
October 2024n/a0.0%9.0%n/a5.5%
November 20240.0%0.0%n/an/a1.9%
December 2024n/a0.0%9.0%n/a3.4%
January 20250.0%0.0%9.0%n/a3.0%
February 20250.0%0.0%9.0%n/a3.9%
March 20250.0%0.0%9.0%n/a2.1%
April 20250.0%0.0%9.0%n/a1.7%
May 202510.0%0.0%12.8%n/a5.5%
June 202510.0%0.0%19.0%n/a12.1%
July 202510.0%0.0%19.0%n/a13.2%
August 2025n/a0.0%19.0%n/a15.3%
September 202510.0%0.0%24.0%15.0%13.2%
October 2025n/a0.0%24.0%n/a8.1%
November 202510.0%n/a24.0%n/a19.8%
December 202510.0%0.0%24.0%n/a11.6%
January 2026n/a0.0%24.0%n/a18.6%
February 20262.4%0.0%24.0%15.0%6.9%
March 20260.0%0.0%n/a19.0%2.6%
April 20260.0%0.0%19.0%19.0%8.6%
May 20260.0%0.0%19.0%19.0%5.8%
June 2026n/an/a19.0%19.0%19.3%
July 20260.0%0.0%21.5%9.0%9.7%
August 20260.0%0.0%21.5%10.0%12.3%

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. December 2025 · Duty paid: all countries 14.0% → 7.0%.
  2. June 2025 · Duty paid: all countries 3.5% → 13.1%.

Where it enters the US

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

  1. Wilmington, NC$747K · 36.0%
  2. Savannah, GA$411K · 19.8%
  3. Port Huron, MI$232K · 11.2%
  4. Newark, NJ$140K · 6.8%
  5. Detroit, MI$126K · 6.1%

Where US exports go

US exports were $10K in August 2026, down 84% from August 2025, and $541K over the last 12 months, up 124% on the 12 months before.

MarketLast 12 monthsSharevs 12 months before
Slovenia$320K59.2%new
Mexico$166K30.8%new
Canada$37K6.9%−72%
Spain$6K1.2%+86%
Turkey$6K1.1%new
Pakistan$3K0.5%new
Sint Maarten$3K0.5%new
All countries$541K100.0%+124%

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; 81 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
Italy$10.3Min 2025−60%$00.0%
Korea, South$4.0Min 2025−10%$00.0%
Portugal$3.8Min 2025−8.5%$00.0%
India$3.0Min 2025−3.1%$00.0%
United Kingdom$2.8Min 2025−34%$00.0%
Tunisia$2.7Min 2024−50%$00.0%
China$2.7Min 2025−21%$00.0%
Japan$2.7Min 2025−14%$00.0%

The biggest market outside the US is Italy, which imported $10.3M of this product in 2025, none of it from the US.

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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