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

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Polymers of propylene or other olefins not elsewhere specified, in primary forms

In short

  • The US imported $176.5M of this product over the 12 months to August 2026, up 1.8% on the year before.
  • Korea, South is the largest supplier, with 20.9% of US imports; France is next, with 17.4%.
  • Korea, South is the cheapest main supplier before and after freight and duty, landing at $2.50/kg.
  • Duty paid averaged 8.6% of the value of imports in August 2026, up 6.3 points on a year earlier.
  • Germany is gaining share: 8.2% over the last 12 months, up from 4.6%.
  • 3 Federal Register notices named this product's tariff codes in the last 12 months.

US imports, Aug 2026

$21.1M

↑ +29% vs Aug 2025

Last 12 months

$176.5M

↑ +1.8% vs the 12 months before

Average duty paid

8.6%

↑ +6.3 pts vs Aug 2025

Top supplier

Korea, South

20.9% 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$16.4M
September 2025$11.2M
October 2025$14.5M
November 2025$12.8M
December 2025$13.8M
January 2026$12.4M
February 2026$10.2M
March 2026$15.1M
April 2026$16.4M
May 2026$15.5M
June 2026$15.8M
July 2026$17.8M
August 2026$21.1M

What changed

  • US imports were $21.1M in August 2026, up 19% from July 2026 and up 29% from August 2025.
  • Over the 12 months to August 2026 they totalled $176.5M, up 1.8% on the 12 months before.
  • Biggest moves in market share since July 2026: France up from 7.2% to 17.4%, Netherlands down from 15.8% to 11.7%.
  • Average price from France fell 50% since July 2026, to $1.99/kg.
  • Duty paid on imports from Singapore rose from 0.4% to 12.5% of their value since July 2026.
  • Duty paid on imports from Korea, South rose from 1.5% to 12.3% of their value since July 2026.

US trade by year

US imports were $176.5M in the 12 months to Aug 2026, up 46% on the 12 months to Aug 2017. US exports were $583.9M, up 24%. 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$120.5M
12 months to Aug 2018$158.2M
12 months to Aug 2019$160.1M
12 months to Aug 2020$146.2M
12 months to Aug 2021$159.1M
12 months to Aug 2022$184.1M
12 months to Aug 2023$163.3M
12 months to Aug 2024$164.6M
12 months to Aug 2025$173.4M
12 months to Aug 2026$176.5M
  • Korea, South
  • Canada
  • France
  • Japan
  • All countries
Share of US imports
Show the numbers
PeriodKorea, SouthCanadaFranceJapan
12 months to Aug 201713.1%19.7%11.0%17.0%
12 months to Aug 201810.0%16.2%17.0%15.1%
12 months to Aug 201914.4%20.8%10.0%15.6%
12 months to Aug 202014.1%16.2%11.5%13.3%
12 months to Aug 202118.0%15.6%15.4%13.7%
12 months to Aug 202220.0%14.1%12.9%13.6%
12 months to Aug 202312.6%23.7%12.0%14.1%
12 months to Aug 202414.3%21.4%14.2%12.6%
12 months to Aug 202519.9%17.6%15.3%13.3%
12 months to Aug 202623.3%18.1%15.1%13.2%
Duty paid, % of value
Show the numbers
PeriodKorea, SouthCanadaFranceJapanAll countries
12 months to Aug 20170.2%0.1%6.5%6.5%3.7%
12 months to Aug 20180.0%0.0%6.5%6.5%4.2%
12 months to Aug 20190.2%0.2%6.5%5.8%3.6%
12 months to Aug 20200.2%0.5%6.5%5.4%3.5%
12 months to Aug 20210.1%0.3%6.5%6.4%4.0%
12 months to Aug 20220.1%0.1%6.5%6.5%4.0%
12 months to Aug 20230.1%0.2%6.5%6.5%3.9%
12 months to Aug 20240.1%0.1%6.5%6.5%4.1%
12 months to Aug 20251.1%0.4%5.3%5.6%4.1%
12 months to Aug 20263.2%0.7%4.5%4.7%3.9%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$176.5M+1.8%3.9%−0.2 pts$583.9M+3.3%
12 months to Aug 2025$173.4M+5.4%4.1%0.0 pts$565.1M−5.3%
12 months to Aug 2024$164.6M+0.8%4.1%+0.2 pts$596.6M−4.4%
12 months to Aug 2023$163.3M−11%3.9%−0.1 pts$624.3M−1.5%
12 months to Aug 2022$184.1M+16%4.0%0.0 pts$634.0M+6.6%
12 months to Aug 2021$159.1M+8.9%4.0%+0.5 pts$594.9M+18%
12 months to Aug 2020$146.2M−8.7%3.5%−0.1 pts$504.4M−7.3%
12 months to Aug 2019$160.1M+1.2%3.6%−0.6 pts$543.9M+11%
12 months to Aug 2018$158.2M+31%4.2%+0.5 pts$489.4M+4.3%
12 months to Aug 2017$120.5M3.7%$469.4M

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
Korea, South$4.4M20.9%−2.8 pts$2.09/kg+16%12.3%+9.2 pts
France$3.7M17.4%−8.7 pts$1.99/kg−36%4.8%+4.7 pts
Canada$3.6M17.3%+3.9 pts$2.68/kg+3.8%0.3%−0.2 pts
Japan$2.6M12.2%+2.7 pts$9.96/kg+22%11.9%+11.5 pts
Germany$2.5M12.0%+9.4 pts$9.67/kg+52%10.0%+9.0 pts
Netherlands$2.5M11.7%+3.8 pts$4.42/kg+8.1%9.9%+9.9 pts
China$407K1.9%−0.7 pts$3.78/kg+62%37.3%−14.3 pts
Czech Republic$263K1.2%new$2.09/kg7.4%
Other countries (10)$1.1M5.4%−8.9 pts$4.46/kg+52%10.6%+10.5 pts
All countries$21.1M100.0%$3.05/kg+11%8.6%+6.3 pts

The 3 largest suppliers had 56.4% 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
Korea, South$2.24/kg$0.14/kg6.1% of price$0.12/kg5.4% of price$2.50/kg+22%
Canada$2.48/kg$0.04/kg1.8% of price$0.00/kg0.1% of price$2.52/kg−12%
France$2.62/kg$0.10/kg3.8% of price$0.15/kg5.9% of price$2.87/kg−18%
Netherlands$4.25/kg$0.17/kg4.0% of price$0.35/kg8.2% of price$4.76/kg+7.9%
Germany$6.42/kg$0.24/kg3.7% of price$0.55/kg8.6% of price$7.20/kg−6.1%
Japan$9.40/kg$0.54/kg5.7% of price$0.79/kg8.4% of price$10.73/kg+43%
All countries$3.17/kg$0.14/kg4.5% of price$0.19/kg5.9% of price$3.50/kg+8.4%

Landed at a US port, Korea, South was cheapest, at $2.50/kg: 0.9% below Canada.

Landed cost from Japan rose 43% on a year earlier, to $10.73/kg, mostly on price: $6.93/kg then, $9.40/kg now.

How the market is shifting

Germany gained the most share: 8.2% of US imports over the last 12 months, up from 4.6% in the 12 months before. Belgium lost the most: 0.4%, down from 5.5%. 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
  • Canada
  • France
  • Japan
  • All countries
Share of US imports
Show the numbers
MonthKorea, SouthCanadaFranceJapan
September 202412.8%15.0%22.3%12.4%
October 202415.4%19.4%4.2%17.4%
November 202421.4%17.1%5.9%18.9%
December 202414.3%15.6%26.8%13.0%
January 202521.8%20.7%18.2%13.4%
February 202521.9%13.8%19.8%7.5%
March 202518.4%18.8%21.3%10.5%
April 202524.2%14.7%9.6%16.7%
May 202528.4%18.4%10.0%8.9%
June 202517.7%27.2%8.7%15.4%
July 202521.8%17.8%7.1%16.9%
August 202523.7%13.3%26.1%9.5%
September 202520.0%22.5%10.5%20.8%
October 202519.2%19.0%15.9%14.0%
November 202533.8%15.6%14.6%10.9%
December 202527.3%14.5%12.1%12.6%
January 202623.6%18.0%14.2%10.5%
February 202621.0%19.5%15.1%9.3%
March 202619.6%19.6%22.7%15.2%
April 202625.3%13.2%25.1%10.1%
May 202625.4%17.0%10.9%15.7%
June 202619.8%26.9%13.4%12.3%
July 202624.6%15.4%7.2%15.3%
August 202620.9%17.3%17.4%12.2%
Duty paid, % of value
Show the numbers
MonthKorea, SouthCanadaFranceJapanAll countries
September 20240.1%0.0%6.5%6.5%4.6%
October 20240.1%0.0%6.5%6.5%3.9%
November 20240.2%0.1%6.5%6.5%4.0%
December 20240.0%0.2%6.4%6.5%4.6%
January 20250.1%0.4%6.5%6.5%3.9%
February 20250.1%0.2%6.5%6.5%4.3%
March 20250.0%1.0%6.5%6.5%4.4%
April 20252.0%0.0%6.5%6.8%4.9%
May 20251.0%1.0%6.5%7.0%4.7%
June 20252.4%0.2%6.5%6.5%4.1%
July 20252.6%0.7%2.6%2.1%3.5%
August 20253.1%0.5%0.1%0.4%2.3%
September 20254.7%0.9%2.4%0.8%2.6%
October 20254.1%1.8%0.0%0.0%1.8%
November 20252.4%0.5%0.7%0.2%1.3%
December 20253.8%0.9%0.0%0.4%1.5%
January 20264.3%1.8%0.0%0.5%2.0%
February 20260.0%3.3%6.5%6.5%4.6%
March 20260.4%0.1%8.0%6.5%4.4%
April 20260.3%0.0%6.5%6.5%4.1%
May 20261.0%0.2%6.5%6.5%4.1%
June 20261.1%0.0%6.5%6.6%3.8%
July 20261.5%0.0%8.0%6.4%4.6%
August 202612.3%0.3%4.8%11.9%8.6%

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. February 2026 · Duty paid: France 0.0% → 6.5%, Japan 0.3% → 6.5%, Netherlands 0.0% → 6.5%, Germany 0.1% → 6.6%.
  2. July–August 2025 · Duty paid: France 6.5% → 0.4%, Japan 6.7% → 0.3%, Netherlands 6.4% → 0.0%, Germany 6.5% → 0.6%.

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 3902.90

Where it enters the US

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

  1. Houston, TX$31.9M · 18.1%
  2. Los Angeles, CA$20.6M · 11.7%
  3. Newark, NJ$19.1M · 10.8%
  4. Savannah, GA$18.2M · 10.3%
  5. Detroit, MI$13.4M · 7.6%

Where US exports go

US exports were $59.7M in August 2026, up 21% from August 2025, and $583.9M over the last 12 months, up 3.3% on the 12 months before. Fastest-growing market with 3% or more of US exports: Saudi Arabia, up 1444%.

MarketLast 12 monthsSharevs 12 months before
Belgium$137.1M23.5%+10%
Singapore$85.4M14.6%−17%
China$63.1M10.8%−21%
Canada$61.1M10.5%−0.4%
Mexico$58.6M10.0%+27%
Japan$21.9M3.7%−6.5%
Brazil$20.3M3.5%+11%
Saudi Arabia$18.4M3.1%+1444%
Other countries (69)$118.1M20.2%+11%
All countries$583.9M100.0%+3.3%

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; 119 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$743.0Min 2025+2.4%$154.0MUS records $73.9M20.7%
Germany$313.6Min 2025+9.6%$32.5MUS records $4.9M10.4%
France$170.0Min 2025−3.5%$10.7MUS records $2.9M6.3%
Singapore$161.2Min 2025−1.2%$106.8M66.2%
Italy$143.1Min 2025+1.8%$1.4M0.9%
Netherlands$122.2Min 2025+34%$11.6MUS records $5.4M9.5%
India$118.9Min 2025−0.8%$19.1MUS records $7.2M16.1%
Belgium$93.7Min 2025+27%$69.5M74.1%

The biggest market outside the US is China, which imported $743.0M of this product in 2025, 20.7% of that from the US by its own count; the US records $73.9M of exports there.

The US supplies 66.2% of imports into Singapore and 74.1% into Belgium, but under 10% into Italy.

Of these, imports into Belgium grew fastest: up 27% from 2024 to 2025.

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
Propylene copolymers, in primary formsHS 3902.30$229.8M$1.45B
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.
  • 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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