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

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Polyamides not elsewhere specified, in primary forms

In short

  • The US imported $178.7M of this product over the 12 months to August 2026, down 16% on the year before.
  • Germany is the largest supplier, with 21.8% of US imports; France is next, with 14.2%.
  • Korea, South has the lowest price, but landed at a US port with freight and duty Canada is cheaper: $5.29/kg against $5.50/kg.
  • Duty paid averaged 12.4% of the value of imports in August 2026, down 4.0 points on a year earlier.
  • Japan is gaining share: 15.5% over the last 12 months, up from 9.9%.
  • 2 Federal Register notices named this product's tariff codes in the last 12 months.

US imports, Aug 2026

$18.5M

↓ −25% vs Aug 2025

Last 12 months

$178.7M

↓ −16% vs the 12 months before

Average duty paid

12.4%

↓ −4.0 pts vs Aug 2025

Top supplier

Germany

21.8% 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.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugSwitzerland ↑Switzerland ↓
Show the numbers
MonthUS imports
August 2025$24.6M
September 2025$11.0M
October 2025$10.4M
November 2025$11.0M
December 2025$12.1M
January 2026$11.6M
February 2026$14.0M
March 2026$17.6M
April 2026$17.4M
May 2026$18.9M
June 2026$17.6M
July 2026$18.7M
August 2026$18.5M

What changed

  • US imports were $18.5M in August 2026, down 0.8% from July 2026 and down 25% from August 2025.
  • Over the 12 months to August 2026 they totalled $178.7M, down 16% on the 12 months before.
  • Biggest moves in market share since July 2026: France up from 7.4% to 14.2%, Japan down from 19.0% to 8.1%.
  • Average price from Switzerland rose 28% since July 2026, to $13.75/kg.
  • Duty paid on imports from Netherlands fell from 13.7% to 8.3% of their value since July 2026.
  • Duty paid on imports from Germany fell from 14.5% to 9.4% of their value since July 2026.

US trade by year

US imports were $178.7M in the 12 months to Aug 2026, up 0.8% on the 12 months to Aug 2017. US exports were $785.3M, up 47%. 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$177.4M
12 months to Aug 2018$218.9M
12 months to Aug 2019$214.0M
12 months to Aug 2020$181.1M
12 months to Aug 2021$167.5M
12 months to Aug 2022$250.0M
12 months to Aug 2023$227.5M
12 months to Aug 2024$201.8M
12 months to Aug 2025$213.9M
12 months to Aug 2026$178.7M
  • Germany
  • Japan
  • Switzerland
  • Netherlands
  • All countries
Share of US imports
Show the numbers
PeriodGermanyJapanSwitzerlandNetherlands
12 months to Aug 201737.1%14.9%15.1%15.6%
12 months to Aug 201832.4%17.0%18.0%11.5%
12 months to Aug 201930.1%19.8%17.3%12.6%
12 months to Aug 202030.3%15.8%17.4%14.2%
12 months to Aug 202130.6%9.1%19.5%13.8%
12 months to Aug 202229.0%7.1%19.7%17.9%
12 months to Aug 202330.8%7.8%21.0%11.5%
12 months to Aug 202425.6%14.6%14.2%15.9%
12 months to Aug 202527.1%9.9%20.2%10.5%
12 months to Aug 202623.2%15.5%9.8%8.5%
Duty paid, % of value
Show the numbers
PeriodGermanyJapanSwitzerlandNetherlandsAll countries
12 months to Aug 20176.5%2.5%5.2%6.5%5.5%
12 months to Aug 20186.5%2.7%5.5%6.4%5.4%
12 months to Aug 20196.5%2.5%4.8%6.5%6.2%
12 months to Aug 20206.5%2.3%4.9%6.5%6.4%
12 months to Aug 20216.5%5.2%5.4%6.5%7.5%
12 months to Aug 20226.5%4.8%5.2%6.5%6.9%
12 months to Aug 20236.4%3.4%5.1%6.5%7.0%
12 months to Aug 20246.5%2.9%6.0%6.5%6.5%
12 months to Aug 20259.1%7.9%9.5%11.0%11.0%
12 months to Aug 202614.9%14.3%16.0%15.0%15.6%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$178.7M−16%15.6%+4.6 pts$785.3M+6.3%
12 months to Aug 2025$213.9M+6.0%11.0%+4.5 pts$738.7M+2.6%
12 months to Aug 2024$201.8M−11%6.5%−0.5 pts$719.8M−5.5%
12 months to Aug 2023$227.5M−9.0%7.0%+0.2 pts$762.0M+6.2%
12 months to Aug 2022$250.0M+49%6.9%−0.7 pts$717.6M+21%
12 months to Aug 2021$167.5M−7.5%7.5%+1.1 pts$594.9M+12%
12 months to Aug 2020$181.1M−15%6.4%+0.2 pts$530.0M−12%
12 months to Aug 2019$214.0M−2.3%6.2%+0.8 pts$605.6M+1.6%
12 months to Aug 2018$218.9M+23%5.4%−0.1 pts$596.4M+12%
12 months to Aug 2017$177.4M5.5%$534.0M

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
Germany$4.0M21.8%+7.3 pts$5.46/kg+15%9.4%−6.8 pts
France$2.6M14.2%+8.6 pts$10.66/kg−0.3%9.7%−5.5 pts
Switzerland$2.1M11.2%−16.5 pts$13.75/kg+77%12.5%−1.5 pts
Japan$1.5M8.1%+0.5 pts$14.78/kg+29%12.7%−4.2 pts
China$1.5M8.1%+3.4 pts$4.68/kg−29%43.8%−17.7 pts
Canada$1.1M6.2%+4.8 pts$5.39/kg−9.5%0.1%−5.2 pts
Korea, South$1.1M6.1%−1.7 pts$4.86/kg−3.0%11.6%+0.7 pts
Singapore$655K3.5%+3.4 pts$5.60/kg−28%12.5%+2.5 pts
Other countries (18)$3.8M20.8%−6.1 pts$6.78/kg−8.9%9.1%−6.1 pts
All countries$18.5M100.0%$6.93/kg−2.4%12.4%−4.0 pts

The 3 largest suppliers had 48.5% 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
Canada$5.23/kg$0.06/kg1.2% of price$0.00/kg0.1% of price$5.29/kg−18%
Korea, South$4.66/kg$0.34/kg7.4% of price$0.50/kg10.7% of price$5.50/kg−8.4%
Germany$5.05/kg$0.16/kg3.2% of price$0.68/kg13.4% of price$5.89/kg+0.6%
China$4.91/kg$0.27/kg5.6% of price$2.07/kg42.2% of price$7.25/kg−40%
Netherlands$6.67/kg$0.09/kg1.4% of price$0.97/kg14.5% of price$7.73/kg−25%
France$11.18/kg$0.26/kg2.3% of price$1.34/kg12.0% of price$12.78/kg−0.6%
Switzerland$11.50/kg$0.04/kg0.4% of price$1.46/kg12.7% of price$13.00/kg+49%
Japan$13.95/kg$0.40/kg2.9% of price$1.84/kg13.2% of price$16.20/kg−11%
All countries$6.64/kg$0.28/kg4.2% of price$0.93/kg14.0% of price$7.84/kg−5.6%

Landed at a US port, Canada was cheapest, at $5.29/kg: 3.8% below Korea, South.

Korea, South had the lowest price before freight and duty, $4.66/kg, but they added 18.1% to it.

Landed cost from Switzerland rose 49% on a year earlier, to $13.00/kg, mostly on price: $7.19/kg then, $11.50/kg now.

How the market is shifting

Japan gained the most share: 15.5% of US imports over the last 12 months, up from 9.9% in the 12 months before. Switzerland lost the most: 9.8%, down from 20.2%. 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.

  • Germany
  • Japan
  • Switzerland
  • Netherlands
  • All countries
Share of US imports
Show the numbers
MonthGermanyJapanSwitzerlandNetherlands
September 202422.9%17.2%19.0%8.2%
October 202442.2%4.5%13.1%5.0%
November 202429.3%12.5%15.6%12.9%
December 202424.0%15.0%16.0%12.8%
January 202527.7%14.0%16.9%1.6%
February 202545.8%6.8%13.1%5.1%
March 202531.2%5.3%30.4%10.1%
April 202532.6%7.6%12.9%14.0%
May 202522.2%9.4%16.0%14.4%
June 202525.9%14.7%15.9%11.2%
July 202514.1%8.0%37.5%10.2%
August 202514.5%7.6%27.8%15.7%
September 202530.8%16.3%8.9%3.8%
October 202528.0%17.3%3.2%10.1%
November 202525.5%11.1%4.5%7.8%
December 202519.2%23.4%9.5%11.6%
January 202620.3%10.8%12.9%16.3%
February 202617.8%24.6%7.5%10.7%
March 202627.7%15.1%11.2%7.2%
April 202623.3%10.1%9.0%14.1%
May 202623.9%15.9%12.2%5.6%
June 202622.6%16.3%5.7%9.3%
July 202620.1%19.0%16.3%7.3%
August 202621.8%8.1%11.2%1.7%
Duty paid, % of value
Show the numbers
MonthGermanyJapanSwitzerlandNetherlandsAll countries
September 20246.5%4.2%5.7%6.5%7.9%
October 20246.5%6.5%5.4%6.5%8.1%
November 20246.5%2.3%4.1%6.5%7.2%
December 20246.5%3.3%3.9%6.5%7.0%
January 20256.5%4.3%6.2%6.5%8.1%
February 20256.5%4.7%5.0%6.5%7.3%
March 20256.5%6.5%5.9%6.5%6.7%
April 20258.5%9.0%9.0%7.2%11.0%
May 202516.2%15.7%14.8%16.5%16.8%
June 202516.5%12.2%15.3%16.5%16.5%
July 202516.3%12.9%15.4%16.5%16.3%
August 202516.2%16.8%14.0%16.4%16.5%
September 202515.0%15.2%42.4%15.0%16.9%
October 202515.0%15.0%43.5%14.1%16.7%
November 202515.0%15.0%42.6%15.0%19.2%
December 202515.0%14.7%19.3%15.0%17.8%
January 202615.0%15.0%15.0%14.3%16.6%
February 202614.5%14.6%11.9%14.0%15.9%
March 202616.0%14.4%13.6%15.3%15.1%
April 202616.5%16.5%13.1%16.5%15.5%
May 202616.5%13.5%14.1%16.5%15.2%
June 202616.5%13.3%15.1%16.3%15.2%
July 202614.5%13.3%11.9%13.7%14.4%
August 20269.4%12.7%12.5%8.3%12.4%

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. January 2026 · Duty paid: Switzerland 42.4% → 13.3%.
  2. August 2025 · Duty paid: Switzerland 15.1% → 42.4%.
  3. March–May 2025 · Duty paid: Germany 6.5% → 16.2%, Japan 5.7% → 14.2%, Switzerland 4.7% → 11.8%, Netherlands 6.5% → 16.5%, all countries 7.2% → 16.5%.

Federal Register notices from the last 12 months that list this product's tariff codes. A notice can add a duty, exclude products from one or only mention them, so read each for what it changes. Search the Federal Register for 3908.90

Where it enters the US

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

  1. Charleston, SC$35.2M · 19.7%
  2. Newark, NJ$29.9M · 16.7%
  3. Norfolk-Newport News, VA$23.8M · 13.3%
  4. Los Angeles, CA$16.5M · 9.3%
  5. Tacoma, WA$11.9M · 6.6%

Where US exports go

US exports were $64.2M in August 2026, down 10% from August 2025, and $785.3M over the last 12 months, up 6.3% on the 12 months before. Fastest-growing market with 3% or more of US exports: Germany, up 298%.

MarketLast 12 monthsSharevs 12 months before
Mexico$151.0M19.2%+11%
Japan$111.3M14.2%−16%
Belgium$107.1M13.6%+8.5%
China$101.1M12.9%+5.1%
United Kingdom$73.5M9.4%+18%
Canada$55.7M7.1%−1.5%
Germany$38.4M4.9%+298%
Italy$25.9M3.3%+81%
Other countries (61)$121.2M15.4%−7.9%
All countries$785.3M100.0%+6.3%

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; 109 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
China$815.1Min 2025+11%$123.7M15.2%
Germany$529.2Min 2025+0.1%$44.9M8.5%
Japan$277.5Min 2025+0.1%$124.7M44.9%
Italy$218.3Min 2025+34%$19.2M8.8%
France$176.9Min 2025+1.2%$9.1M5.2%
Mexico$152.4Min 2025−3.9%$103.3M67.8%
United Kingdom$132.0Min 2025−14%$68.2M51.7%
Hong Kong$130.6Min 2025−0.3%$16.6M12.7%

The biggest market outside the US is China, which imported $815.1M of this product in 2025, 15.2% of that from the US.

The US supplies 44.9% of imports into Japan and 67.8% into Mexico, but under 10% into Germany, Italy and France.

Of these, imports into Italy grew fastest: up 34% from 2024 to 2025.

Other products under heading 3908: polyamides, in primary forms. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Polyamide-6,-11,-12,-6,6,-6,9,-6,10 or -6,12 (nylon type), in primary formsHS 3908.10$434.9M$1.46B
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.
  • Tariff notices are from the Federal Register, matched to this product by the HTS numbers in their text.
  • 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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