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

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HS 5509.59

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

In short

  • The US imported $4.3M of this product over the 12 months to August 2026, up 1.2% on the year before.
  • China is the largest supplier, with 62.3% of US imports; India is next, with 19.2%.
  • China is the cheapest main supplier before and after freight and duty, landing at $3.59/kg.
  • Duty paid averaged 36.2% of the value of imports in August 2026, down 9.1 points on a year earlier.
  • Korea, South is gaining share: 11.8% over the last 12 months, up from 0.0%.
  • US exports were $279K over the last 12 months; the largest market is Mexico, with 90.4%.

US imports, Aug 2026

$279K

↓ −38% vs Aug 2025

Last 12 months

$4.3M

↑ +1.2% vs the 12 months before

Average duty paid

36.2%

↓ −9.1 pts vs Aug 2025

Top supplier

China

62.3% 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$448K
September 2025$498K
October 2025$258K
November 2025$383K
December 2025$817K
January 2026$507K
February 2026$37K
March 2026$485K
April 2026$167K
May 2026$163K
June 2026$436K
July 2026$238K
August 2026$279K

What changed

  • US imports were $279K in August 2026, up 17% from July 2026 and down 38% from August 2025.
  • Over the 12 months to August 2026 they totalled $4.3M, up 1.2% on the 12 months before.
  • Biggest moves in market share since July 2026: China up from 34.5% to 62.3%, Korea, South down from 52.1% to 0.0%.
  • Average price from India rose 152% since July 2026, to $4.46/kg.
  • Duty paid on imports from Canada fell from 23.2% to 0.5% of their value since July 2026.
  • Duty paid on imports from China rose from 48.2% to 50.7% of their value since July 2026.

US trade by year

US imports were $4.3M in the 12 months to Aug 2026, up 418% on the 12 months to Aug 2017. US exports were $279K, up 8.1%. 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$825K
12 months to Aug 2018$1.1M
12 months to Aug 2019$2.7M
12 months to Aug 2020$1.8M
12 months to Aug 2021$2.6M
12 months to Aug 2022$3.2M
12 months to Aug 2023$3.4M
12 months to Aug 2024$2.8M
12 months to Aug 2025$4.2M
12 months to Aug 2026$4.3M
  • China
  • Mexico
  • India
  • Korea, South
  • All countries
Share of US imports
Show the numbers
PeriodChinaMexicoIndiaKorea, South
12 months to Aug 20174.1%7.1%0.0%0.0%
12 months to Aug 20181.4%0.3%0.0%0.2%
12 months to Aug 201953.1%0.0%2.0%0.0%
12 months to Aug 202032.3%0.0%4.8%0.1%
12 months to Aug 202126.3%0.0%23.4%0.0%
12 months to Aug 20226.0%0.0%60.9%0.0%
12 months to Aug 20231.4%0.0%62.2%0.2%
12 months to Aug 202455.8%8.2%6.6%0.0%
12 months to Aug 202546.4%16.7%14.9%0.0%
12 months to Aug 202631.9%13.3%12.9%11.8%
Duty paid, % of value
Show the numbers
PeriodChinaMexicoIndiaKorea, SouthAll countries
12 months to Aug 201713.2%0.0%n/an/a5.0%
12 months to Aug 201813.2%13.2%n/a13.2%8.3%
12 months to Aug 201924.2%n/a13.2%n/a16.8%
12 months to Aug 202038.2%n/a13.2%0.0%17.6%
12 months to Aug 202138.2%n/a13.2%13.2%17.2%
12 months to Aug 202238.2%n/a13.2%13.2%12.5%
12 months to Aug 202338.2%n/a13.2%13.2%10.8%
12 months to Aug 202438.2%0.2%13.2%n/a24.8%
12 months to Aug 202548.1%0.0%15.7%n/a26.8%
12 months to Aug 202654.9%0.0%32.0%10.2%26.7%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$4.3M+1.2%26.7%−0.2 pts$279K−4.0%
12 months to Aug 2025$4.2M+50%26.8%+2.1 pts$290K−23%
12 months to Aug 2024$2.8M−17%24.8%+13.9 pts$379K+42%
12 months to Aug 2023$3.4M+6.7%10.8%−1.6 pts$266K−81%
12 months to Aug 2022$3.2M+24%12.5%−4.8 pts$1.4M+881%
12 months to Aug 2021$2.6M+43%17.2%−0.4 pts$140K+442%
12 months to Aug 2020$1.8M−33%17.6%+0.8 pts$26K−89%
12 months to Aug 2019$2.7M+133%16.8%+8.5 pts$236K+76%
12 months to Aug 2018$1.1M+39%8.3%+3.3 pts$134K−48%
12 months to Aug 2017$825K5.0%$258K

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$174K62.3%+8.0 pts$2.30/kg+5.0%50.7%−17.5 pts
India$54K19.2%+8.1 pts$4.46/kg−0.8%23.2%−4.4 pts
Canada$51K18.4%new$17.38/kg0.5%
All countries$279K100.0%$3.08/kg−7.8%36.2%−9.1 pts

The 3 largest suppliers had 58.1% 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$2.23/kg$0.26/kg11.8% of price$1.09/kg49.1% of price$3.59/kg−9.4%
Korea, South$3.37/kg$0.28/kg8.2% of price$0.34/kg10.0% of price$3.98/kg
India$3.94/kg$0.02/kg0.5% of price$0.91/kg23.2% of price$4.88/kg+0.2%
Canada$17.68/kg$0.05/kg0.3% of price$0.21/kg1.2% of price$17.94/kg−3.6%
Netherlands$20.27/kg$0.00/kg0.0% of price$4.70/kg23.2% of price$24.98/kg+2.5%
All countries$2.98/kg$0.24/kg8.0% of price$0.93/kg31.2% of price$4.15/kg−16%

Landed at a US port, China was cheapest, at $3.59/kg: 9.9% below Korea, South.

How the market is shifting

Korea, South gained the most share: 11.8% of US imports over the last 12 months, up from 0.0% in the 12 months before. China lost the most: 31.9%, down from 46.4%. 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.

  • China
  • Mexico
  • India
  • Korea, South
  • All countries
Share of US imports
Show the numbers
MonthChinaMexicoIndiaKorea, South
September 202449.0%2.2%31.7%0.0%
October 202474.2%0.0%8.3%0.0%
November 202428.3%15.0%41.4%0.0%
December 202451.1%14.1%11.2%0.0%
January 202573.0%8.7%18.0%0.0%
February 202526.4%29.9%15.3%0.0%
March 20257.3%0.0%0.0%0.0%
April 202526.8%40.9%0.3%0.0%
May 202515.6%27.3%11.4%0.0%
June 202559.4%25.4%0.0%0.0%
July 202530.0%31.5%12.1%0.0%
August 202554.4%12.5%11.2%0.0%
September 202527.8%20.3%22.4%0.0%
October 202532.0%29.1%0.0%18.5%
November 202510.7%26.1%2.8%0.0%
December 202530.6%30.9%5.4%6.4%
January 202624.4%7.8%33.5%0.0%
February 202614.9%0.0%0.0%0.0%
March 202627.0%0.0%0.0%21.5%
April 202674.6%0.0%0.0%0.0%
May 20260.0%0.0%50.8%34.3%
June 202647.8%0.0%16.2%27.6%
July 202634.5%0.0%2.2%52.1%
August 202662.3%0.0%19.2%0.0%
Duty paid, % of value
Show the numbers
MonthChinaMexicoIndiaKorea, SouthAll countries
September 202438.2%0.0%13.2%n/a22.9%
October 202438.2%n/a13.2%n/a31.8%
November 202438.2%0.0%13.2%n/a18.3%
December 202438.2%0.0%13.2%n/a24.1%
January 202538.2%0.0%13.2%n/a30.3%
February 202538.2%0.0%13.2%n/a12.1%
March 202558.2%n/an/an/a4.2%
April 202558.2%0.0%13.2%n/a16.5%
May 202568.2%0.0%23.2%n/a16.7%
June 202568.5%0.0%n/an/a44.0%
July 202568.2%0.0%23.2%n/a28.0%
August 202568.2%0.0%27.6%n/a45.3%
September 202568.2%0.0%48.0%n/a35.0%
October 202568.2%0.0%n/a6.7%24.7%
November 202558.2%0.0%63.2%n/a16.6%
December 202558.2%0.0%63.2%15.0%24.7%
January 202658.2%0.0%32.9%n/a25.7%
February 202658.2%n/an/an/a8.7%
March 202648.2%n/an/a10.0%26.1%
April 202648.2%n/an/an/a39.1%
May 2026n/an/a1.5%10.0%7.7%
June 202648.2%n/a23.2%10.0%31.5%
July 202648.2%n/a23.2%10.0%24.9%
August 202650.7%n/a23.2%n/a36.2%

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. June 2025 · Duty paid: all countries 16.2% → 39.1%.

Where it enters the US

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

  1. Los Angeles, CA$2.2M · 50.8%
  2. Panama City, FL$568K · 13.3%
  3. Champlain-Rouses Point, NY$298K · 7.0%
  4. Miami, FL$226K · 5.3%
  5. Alexandria Bay, NY$200K · 4.7%

Where US exports go

US exports were $23K in August 2026, down 4.6% from August 2025, and $279K over the last 12 months, down 4.0% on the 12 months before. Fastest-growing market with 3% or more of US exports: El Salvador, up 52%.

MarketLast 12 monthsSharevs 12 months before
Mexico$252K90.4%+16%
Canada$17K5.9%−61%
El Salvador$10K3.7%+52%
All countries$279K100.0%−4.0%

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; 90 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
Cambodia$183.3Min 2025+9.8%$00.0%
Egypt$28.6Min 2025+16%$00.0%
Pakistan$6.4Min 2025+79%$00.0%
France$5.2Min 2025+15%$00.0%
Uganda$4.3Min 2025+146%$00.0%
Saudi Arabia$3.9Min 2025+203%$00.0%
Spain$3.2Min 2025+18%$00.0%
China$2.7Min 2025+9.1%$00.0%

The biggest market outside the US is Cambodia, which imported $183.3M of this product in 2025, none of it from the US.

Of these, imports into Saudi Arabia grew fastest: up 203% 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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