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

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Propylene copolymers, in primary forms

In short

  • The US imported $229.8M of this product over the 12 months to August 2026, down 40% on the year before.
  • Canada is the largest supplier, with 21.8% of US imports; Japan is next, with 18.9%.
  • Canada is the cheapest main supplier before and after freight and duty, landing at $1.08/kg.
  • Duty paid averaged 9.4% of the value of imports in August 2026, down 3.0 points on a year earlier.
  • Canada is gaining share: 15.5% over the last 12 months, up from 8.8%.
  • US exports were $1.45B over the last 12 months; the largest market is Mexico, with 42.8%.

US imports, Aug 2026

$23.2M

↑ +2.3% vs Aug 2025

Last 12 months

$229.8M

↓ −40% vs the 12 months before

Average duty paid

9.4%

↓ −3.0 pts vs Aug 2025

Top supplier

Canada

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.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAug
Show the numbers
MonthUS imports
August 2025$22.6M
September 2025$17.9M
October 2025$17.4M
November 2025$17.7M
December 2025$17.2M
January 2026$25.3M
February 2026$21.0M
March 2026$17.4M
April 2026$19.3M
May 2026$17.2M
June 2026$16.5M
July 2026$19.6M
August 2026$23.2M

What changed

  • US imports were $23.2M in August 2026, up 18% from July 2026 and up 2.3% from August 2025.
  • Over the 12 months to August 2026 they totalled $229.8M, down 40% on the 12 months before.
  • Biggest moves in market share since July 2026: Singapore up from 9.4% to 18.6%, Japan down from 27.5% to 18.9%.
  • Average price from Canada fell 18% since July 2026, to $1.00/kg.
  • Duty paid on imports from Germany fell from 16.1% to 10.0% of their value since July 2026.
  • Duty paid on imports from Belgium fell from 14.5% to 10.0% of their value since July 2026.

US trade by year

US imports were $229.8M in the 12 months to Aug 2026, down 23% on the 12 months to Aug 2017. US exports were $1.45B, up 17%. 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.

2017201820192020202120222023202420252026Brazil ↑Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$297.3M
12 months to Aug 2018$403.5M
12 months to Aug 2019$490.2M
12 months to Aug 2020$277.2M
12 months to Aug 2021$531.2M
12 months to Aug 2022$564.7M
12 months to Aug 2023$356.7M
12 months to Aug 2024$380.1M
12 months to Aug 2025$382.4M
12 months to Aug 2026$229.8M
  • Singapore
  • Korea, South
  • Japan
  • Canada
  • All countries
Share of US imports
Show the numbers
PeriodSingaporeKorea, SouthJapanCanada
12 months to Aug 201731.4%16.1%10.5%4.5%
12 months to Aug 201828.6%17.9%8.2%4.8%
12 months to Aug 201919.3%19.6%9.2%3.2%
12 months to Aug 202025.3%17.7%14.9%5.7%
12 months to Aug 202118.1%34.3%5.9%5.7%
12 months to Aug 202222.9%29.3%7.5%7.8%
12 months to Aug 202326.7%26.9%9.9%7.0%
12 months to Aug 202429.7%31.0%10.0%6.4%
12 months to Aug 202523.0%32.6%11.5%8.8%
12 months to Aug 202620.0%17.0%16.8%15.5%
Duty paid, % of value
Show the numbers
PeriodSingaporeKorea, SouthJapanCanadaAll countries
12 months to Aug 20170.1%0.6%6.5%0.2%2.2%
12 months to Aug 20180.1%0.9%6.5%0.3%2.4%
12 months to Aug 20190.2%0.6%6.5%1.0%2.2%
12 months to Aug 20200.0%0.5%6.5%0.2%2.3%
12 months to Aug 20210.1%0.5%6.5%0.1%2.4%
12 months to Aug 20220.1%0.6%6.5%0.0%2.5%
12 months to Aug 20230.1%1.1%6.5%0.2%2.9%
12 months to Aug 20240.1%0.7%6.5%0.1%2.4%
12 months to Aug 20252.5%3.2%9.7%0.2%5.0%
12 months to Aug 202610.1%12.4%15.1%0.0%11.3%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$229.8M−40%11.3%+6.3 pts$1.45B−2.4%
12 months to Aug 2025$382.4M+0.6%5.0%+2.6 pts$1.49B−8.0%
12 months to Aug 2024$380.1M+6.6%2.4%−0.4 pts$1.62B+6.6%
12 months to Aug 2023$356.7M−37%2.9%+0.4 pts$1.52B−12%
12 months to Aug 2022$564.7M+6.3%2.5%+0.2 pts$1.73B+9.7%
12 months to Aug 2021$531.2M+92%2.4%+0.1 pts$1.58B+37%
12 months to Aug 2020$277.2M−43%2.3%+0.1 pts$1.15B−17%
12 months to Aug 2019$490.2M+21%2.2%−0.2 pts$1.40B−1.9%
12 months to Aug 2018$403.5M+36%2.4%+0.2 pts$1.42B+14%
12 months to Aug 2017$297.3M2.2%$1.25B

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$5.1M21.8%+14.5 pts$1.00/kg−2.0%0.0%−0.2 pts
Japan$4.4M18.9%+0.4 pts$4.09/kg+20%12.5%−4.0 pts
Singapore$4.3M18.6%−1.8 pts$2.14/kg−2.4%11.3%+1.2 pts
Korea, South$2.6M11.1%−18.3 pts$1.61/kg+11%12.3%+1.6 pts
Germany$2.4M10.4%+6.0 pts$2.94/kg−12%10.0%−5.9 pts
Belgium$1.8M7.6%+5.2 pts$2.39/kg−1.4%10.0%−5.8 pts
Netherlands$587K2.5%−2.1 pts$2.38/kg+19%9.9%−6.3 pts
Brazil$359K1.5%−3.2 pts$4.79/kg+63%44.0%+25.5 pts
Other countries (12)$1.7M7.5%+1.6 pts$3.21/kg+28%10.6%−8.6 pts
All countries$23.2M100.0%$1.90/kg−1.2%9.4%−3.0 pts

The 3 largest suppliers had 53.7% 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
Canada$1.06/kg$0.02/kg1.4% of price$0.00/kg0.0% of price$1.08/kg+11%
Korea, South$1.63/kg$0.15/kg9.3% of price$0.18/kg10.9% of price$1.96/kg+13%
Singapore$2.14/kg$0.13/kg6.2% of price$0.23/kg10.9% of price$2.50/kg+0.6%
Belgium$2.30/kg$0.08/kg3.7% of price$0.32/kg13.9% of price$2.71/kg+5.6%
Germany$3.20/kg$0.26/kg8.2% of price$0.44/kg13.7% of price$3.90/kg+7.2%
Japan$3.85/kg$0.24/kg6.2% of price$0.56/kg14.4% of price$4.65/kg+1.0%
All countries$1.91/kg$0.10/kg5.2% of price$0.19/kg10.0% of price$2.21/kg+1.3%

Landed at a US port, Canada was cheapest, at $1.08/kg: 45.2% below Korea, South.

Landed cost from Korea, South rose 13% on a year earlier, to $1.96/kg, mostly on price: $1.45/kg then, $1.63/kg now.

How the market is shifting

Canada gained the most share: 15.5% of US imports over the last 12 months, up from 8.8% in the 12 months before. Korea, South lost the most: 17.0%, down from 32.6%. 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.

  • Singapore
  • Korea, South
  • Japan
  • Canada
  • All countries
Share of US imports
Show the numbers
MonthSingaporeKorea, SouthJapanCanada
September 202434.0%31.3%11.4%4.8%
October 202430.6%32.2%9.9%4.5%
November 202420.2%35.1%9.6%6.4%
December 202418.8%29.7%12.9%10.3%
January 202524.6%26.6%11.9%18.1%
February 202513.1%38.3%7.5%7.4%
March 202514.4%40.6%12.9%5.7%
April 202524.6%35.6%9.4%10.0%
May 202515.0%40.0%11.5%11.1%
June 202522.7%31.2%7.5%9.9%
July 202526.7%22.1%15.4%13.2%
August 202520.4%29.4%18.5%7.3%
September 202515.1%17.2%19.6%10.6%
October 202523.6%25.8%11.4%10.7%
November 202512.9%19.0%24.1%11.1%
December 20259.6%30.6%18.5%11.3%
January 202635.4%12.5%13.1%19.7%
February 202642.4%16.5%10.9%11.0%
March 202615.3%19.3%15.6%10.4%
April 202626.5%14.6%13.9%15.0%
May 202613.6%11.3%18.2%14.5%
June 20266.0%15.2%10.4%31.2%
July 20269.4%14.8%27.5%16.9%
August 202618.6%11.1%18.9%21.8%
Duty paid, % of value
Show the numbers
MonthSingaporeKorea, SouthJapanCanadaAll countries
September 20240.0%1.7%6.5%0.0%2.5%
October 20240.2%1.8%6.5%0.0%2.8%
November 20240.0%1.3%6.5%0.0%3.1%
December 20240.0%0.2%6.5%0.0%3.1%
January 20250.2%0.6%6.5%0.0%2.1%
February 20250.0%0.0%6.5%0.0%3.0%
March 20250.0%0.9%6.5%3.2%3.1%
April 20250.1%0.5%6.6%0.1%2.5%
May 20256.5%8.4%15.5%0.2%9.4%
June 202510.0%10.1%16.5%0.0%11.2%
July 202510.1%10.2%16.5%0.0%11.0%
August 202510.2%10.7%16.6%0.2%12.4%
September 202510.3%13.8%16.2%0.4%13.4%
October 202510.2%15.5%15.0%0.0%12.3%
November 202510.2%13.6%15.0%0.0%13.0%
December 202510.5%13.0%15.0%0.0%12.6%
January 202610.0%15.0%14.5%0.0%10.3%
February 20269.5%11.4%13.6%0.0%10.2%
March 202610.3%9.9%16.2%0.0%12.1%
April 202610.1%10.8%16.5%0.1%11.2%
May 20269.9%10.7%16.5%0.1%12.2%
June 202610.5%10.0%16.5%0.0%9.6%
July 202610.0%10.4%15.3%0.0%11.2%
August 202611.3%12.3%12.5%0.0%9.4%

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. May–June 2025 · Duty paid: Singapore 0.1% → 10.1%, Korea, South 0.6% → 10.5%, Japan 6.5% → 16.5%, Germany 6.5% → 16.3%, Brazil 6.5% → 16.5%, all countries 3.1% → 11.8%.
  2. May 2023 · Duty paid: Brazil 0.0% → 6.5%.

Where it enters the US

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

  1. Houston, TX$73.3M · 31.9%
  2. Savannah, GA$40.0M · 17.4%
  3. Norfolk-Newport News, VA$18.7M · 8.1%
  4. Newark, NJ$13.9M · 6.0%
  5. Los Angeles, CA$12.7M · 5.5%

Where US exports go

US exports were $121.3M in August 2026, up 1.1% from August 2025, and $1.45B over the last 12 months, down 2.4% on the 12 months before. Fastest-growing market with 3% or more of US exports: Belgium, up 6.3%.

MarketLast 12 monthsSharevs 12 months before
Mexico$622.7M42.8%−6.9%
Canada$444.8M30.6%−1.8%
Belgium$60.2M4.1%+6.3%
Netherlands$48.6M3.3%−19%
China$33.6M2.3%−11%
Brazil$25.3M1.7%+11%
Italy$22.4M1.5%+139%
Peru$19.1M1.3%+8.1%
Other countries (80)$176.9M12.2%+9.6%
All countries$1.45B100.0%−2.4%

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; 110 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
China$1.52Bin 2025−4.7%$30.2M2.0%
Germany$1.26Bin 2025+2.3%$39.5M3.1%
Italy$932.8Min 2025+6.7%$9.2M1.0%
Mexico$707.5Min 2025−14%$584.2M82.6%
Turkey$669.4Min 2025−7.4%$13.7M2.0%
India$604.9Min 2025+6.7%$8.9M1.5%
France$573.6Min 2025−1.9%$11.9M2.1%
Poland$519.1Min 2025−4.2%$6.6M1.3%

The biggest market outside the US is China, which imported $1.52B of this product in 2025, 2.0% of that from the US.

The US supplies 82.6% of imports into Mexico, but under 10% into China, Germany and Italy.

Other products under heading 3902: polymers of propylene or of other olefins, in primary forms. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Polypropylene, in primary formsHS 3902.10$489.2M$1.92B
Polymers of propylene or other olefins not elsewhere specified, in primary formsHS 3902.90$176.5M$583.9M
Polyisobutylene, in primary formsHS 3902.20$92.2M$125.2M
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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