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

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Synthetic filament yarn except sewing thread, not for retail sale, single yarn not elsewhere specified, twisted with over 50 turns per meter, of yarns not elsewhere specified

In short

  • The US imported $5.8M of this product over the 12 months to August 2026, down 0.4% on the year before.
  • China is the largest supplier, with 72.2% of US imports; Korea, South is next, with 14.9%.
  • China is the cheapest main supplier before and after freight and duty, landing at $10.50/kg.
  • Duty paid averaged 36.8% of the value of imports in August 2026, up 20.2 points on a year earlier.
  • Korea, South is gaining share: 42.1% over the last 12 months, up from 26.6%.
  • US exports were $7.7M over the last 12 months; the largest market is United Kingdom, with 27.4%.

US imports, Aug 2026

$143K

↓ −72% vs Aug 2025

Last 12 months

$5.8M

↓ −0.4% vs the 12 months before

Average duty paid

36.8%

↑ +20.2 pts vs Aug 2025

Top supplier

China

72.2% 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$505K
September 2025$430K
October 2025$511K
November 2025$634K
December 2025$443K
January 2026$280K
February 2026$489K
March 2026$705K
April 2026$368K
May 2026$844K
June 2026$525K
July 2026$430K
August 2026$143K

What changed

  • US imports were $143K in August 2026, down 67% from July 2026 and down 72% from August 2025.
  • Over the 12 months to August 2026 they totalled $5.8M, down 0.4% on the 12 months before.
  • Biggest moves in market share since July 2026: China up from 28.3% to 72.2%, Korea, South down from 45.4% to 14.9%.
  • Average price from Korea, South rose 178% since July 2026, to $139.39/kg.
  • Duty paid on imports from Korea, South fell from 18.0% to 12.5% of their value since July 2026.
  • Duty paid on imports from China rose from 43.0% to 45.5% of their value since July 2026.

US trade by year

US imports were $5.8M in the 12 months to Aug 2026, down 36% on the 12 months to Aug 2017. US exports were $7.7M, up 71%. In January 2017 the HS 2017 revision moved some goods between this code and 5402.53, so part of a change across the dashed line can be the revision. 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.

2017201820192020202120222023202420252026HS 2017Duty ↑Duty ↓Duty ↓
Show the numbers
PeriodUS imports
12 months to Aug 2017$9.1M
12 months to Aug 2018$5.7M
12 months to Aug 2019$5.6M
12 months to Aug 2020$5.0M
12 months to Aug 2021$7.2M
12 months to Aug 2022$2.6M
12 months to Aug 2023$4.3M
12 months to Aug 2024$5.7M
12 months to Aug 2025$5.8M
12 months to Aug 2026$5.8M
  • Korea, South
  • Japan
  • China
  • India
  • All countries
Share of US imports
Show the numbers
PeriodKorea, SouthJapanChinaIndia
12 months to Aug 20170.0%11.8%3.7%0.4%
12 months to Aug 20180.0%25.7%0.2%1.2%
12 months to Aug 20191.3%30.8%0.4%3.4%
12 months to Aug 20206.9%22.6%0.9%0.0%
12 months to Aug 20213.3%3.0%10.1%0.0%
12 months to Aug 202229.7%11.3%8.4%0.0%
12 months to Aug 202324.9%5.2%56.6%0.5%
12 months to Aug 202414.1%20.4%59.1%2.4%
12 months to Aug 202526.6%22.7%35.5%6.3%
12 months to Aug 202642.1%24.2%22.1%4.1%
Duty paid, % of value
Show the numbers
PeriodKorea, SouthJapanChinaIndiaAll countries
12 months to Aug 2017n/a8.0%8.0%8.0%7.8%
12 months to Aug 2018n/a8.0%8.0%8.0%8.0%
12 months to Aug 20198.0%8.0%18.0%8.0%8.0%
12 months to Aug 20208.0%8.0%33.0%n/a8.2%
12 months to Aug 20218.0%8.0%33.0%n/a10.5%
12 months to Aug 20228.0%8.0%33.0%n/a10.1%
12 months to Aug 20238.0%8.0%33.0%8.0%22.1%
12 months to Aug 20248.0%8.0%33.0%8.0%22.8%
12 months to Aug 20256.7%9.4%51.4%11.3%23.7%
12 months to Aug 202613.1%16.7%49.4%37.7%23.3%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$5.8M−0.4%23.3%−0.4 pts$7.7M+32%
12 months to Aug 2025$5.8M+1.6%23.7%+0.9 pts$5.8M+32%
12 months to Aug 2024$5.7M+33%22.8%+0.6 pts$4.4M−44%
12 months to Aug 2023$4.3M+66%22.1%+12.1 pts$7.9M+11%
12 months to Aug 2022$2.6M−64%10.1%−0.4 pts$7.1M+105%
12 months to Aug 2021$7.2M+46%10.5%+2.3 pts$3.5M+10%
12 months to Aug 2020$5.0M−12%8.2%+0.2 pts$3.2M−7.0%
12 months to Aug 2019$5.6M−2.0%8.0%0.0 pts$3.4M+37%
12 months to Aug 2018$5.7M−37%8.0%+0.2 pts$2.5M−45%
12 months to Aug 2017HS 2017 revision$9.1M7.8%$4.5M

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
China$103K72.2%+55.9 pts$7.48/kg−5.7%45.5%−17.5 pts
Korea, South$21K14.9%−25.0 pts$139.39/kg+116%12.5%+2.5 pts
India$10K6.7%−5.0 pts$1.76/kg+15%18.0%0.0 pts
Germany$5K3.3%new$5.51/kg18.0%
Netherlands$4K3.0%+1.3 pts$141.13/kg+70%10.0%−5.5 pts
All countries$143K100.0%$7.06/kg−23%36.8%+20.2 pts

The 3 largest suppliers had 88.4% 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
China$7.00/kg$0.43/kg6.1% of price$3.08/kg44.0% of price$10.50/kg−23%
Korea, South$51.08/kg$0.89/kg1.7% of price$6.88/kg13.5% of price$58.85/kg−16%
Japan$61.02/kg$0.57/kg0.9% of price$10.98/kg18.0% of price$72.57/kg+31%
Netherlands$93.45/kg$3.26/kg3.5% of price$15.97/kg17.1% of price$112.68/kg+22%
All countries$17.36/kg$0.60/kg3.5% of price$3.85/kg22.2% of price$21.82/kg+64%

Landed at a US port, China was cheapest, at $10.50/kg: 82.2% below Korea, South.

Landed cost from Japan rose 31% on a year earlier, to $72.57/kg, mostly on price: $50.26/kg then, $61.02/kg now.

How the market is shifting

Korea, South gained the most share: 42.1% of US imports over the last 12 months, up from 26.6% in the 12 months before. China lost the most: 22.1%, down from 35.5%. 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.

  • Korea, South
  • Japan
  • China
  • India
  • All countries
Share of US imports
Show the numbers
MonthKorea, SouthJapanChinaIndia
September 20240.0%23.9%55.1%15.5%
October 202423.1%42.6%28.5%1.6%
November 202431.2%6.1%45.4%14.1%
December 20240.0%0.0%78.6%5.1%
January 202529.9%32.4%24.9%5.4%
February 202552.4%0.0%0.3%13.3%
March 202520.8%23.0%22.0%0.4%
April 202523.6%29.2%37.0%6.2%
May 202525.9%25.1%37.8%5.4%
June 202548.8%0.0%44.6%2.2%
July 202523.9%18.4%53.8%2.7%
August 202539.9%30.5%16.3%11.7%
September 202544.7%0.0%43.2%11.3%
October 202534.6%31.1%19.2%4.3%
November 202530.9%24.4%8.0%2.7%
December 202542.6%35.0%15.8%6.5%
January 202675.0%0.0%15.9%8.3%
February 202644.0%31.6%13.4%6.7%
March 202633.9%23.3%37.5%2.3%
April 202680.0%0.0%0.2%3.8%
May 202631.2%36.8%28.8%2.0%
June 202647.4%39.1%6.7%1.5%
July 202645.4%23.4%28.3%0.0%
August 202614.9%0.0%72.2%6.7%
Duty paid, % of value
Show the numbers
MonthKorea, SouthJapanChinaIndiaAll countries
September 2024n/a8.0%33.0%8.0%21.8%
October 20248.0%8.0%33.0%8.0%15.1%
November 20248.0%8.0%33.0%8.0%19.4%
December 2024n/an/a33.0%8.0%27.6%
January 20258.0%8.0%33.0%8.0%14.2%
February 20250.0%n/a33.0%8.0%3.4%
March 20250.0%8.0%52.8%8.0%16.2%
April 20250.0%8.0%56.9%8.0%24.6%
May 202510.0%18.0%72.8%17.5%36.6%
June 202510.0%n/a63.0%18.0%34.2%
July 202510.0%18.0%63.0%18.0%40.3%
August 202510.0%0.0%63.0%18.0%16.6%
September 202515.0%n/a63.0%30.4%37.4%
October 202515.0%15.0%63.0%38.3%26.4%
November 202515.0%15.0%53.0%58.0%19.2%
December 202515.0%15.0%53.0%58.0%23.8%
January 202615.0%n/a53.0%58.0%24.6%
February 202615.0%15.0%53.0%44.3%22.1%
March 202610.0%18.0%43.0%18.0%24.7%
April 202610.0%n/a43.0%18.0%11.7%
May 202610.0%18.0%43.0%18.0%22.7%
June 202610.0%18.0%43.0%18.0%15.9%
July 202618.0%18.0%43.0%n/a25.1%
August 202612.5%n/a45.5%18.0%36.8%

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. October 2025 · Duty paid: all countries 35.7% → 24.2%.
  2. February–June 2025 · Duty paid: Korea, South 0.0% → 10.0%, Japan 8.0% → 18.0%, China 33.0% → 56.9%, all countries 14.3% → 35.3%.
  3. November 2024 · Duty paid: all countries 22.1% → 14.3%.
  4. October 2022 · Duty paid: all countries 8.1% → 21.9%.

Where it enters the US

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

  1. Alexandria Bay, NY$1.3M · 23.2%
  2. Tacoma, WA$1.3M · 21.8%
  3. Charleston, SC$1.2M · 20.6%
  4. Seattle, WA$664K · 11.4%
  5. Savannah, GA$296K · 5.1%

Where US exports go

US exports were $313K in August 2026, down 8.4% from August 2025, and $7.7M over the last 12 months, up 32% on the 12 months before. Fastest-growing market with 3% or more of US exports: United Kingdom, up 5347%.

MarketLast 12 monthsSharevs 12 months before
United Kingdom$2.1M27.4%+5347%
China$1.9M25.2%−44%
Japan$1.0M13.4%+323%
Italy$902K11.7%new
Mexico$603K7.8%+4.8%
India$492K6.4%+437%
France$206K2.7%−45%
Germany$136K1.8%−58%
Other countries (6)$280K3.6%−44%
All countries$7.7M100.0%+32%

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; 84 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.

MarketImportsvs year beforeFrom the USUS share
China$18.3Min 2025+26%$12.2MUS records $3.3M66.5%
Turkey$5.1Min 2025+36%$00.0%
Korea, South$5.1Min 2025+6.8%$24K0.5%
Japan$3.9Min 2025−25%$1.1MUS records $542K28.1%
France$2.7Min 2025+4.6%$582K21.8%
Spain$2.0Min 2025+28%$00.0%
Romania$2.0Min 2025+23%$00.0%
Hong Kong$2.0Min 2025n/a$00.0%

The biggest market outside the US is China, which imported $18.3M of this product in 2025, 66.5% of that from the US by its own count; the US records $3.3M of exports there.

Of these, imports into Turkey grew fastest: up 36% from 2024 to 2025.

Other products under heading 5402: synthetic filament yarn (other than sewing thread), not put up for retail sale, including synthetic monofilaments of less than 67 decitex. US trade over the 12 months to August 2026.

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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