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

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Sheets and plates of polarizing material

In short

  • The US imported $21.2M of this product over the 12 months to August 2026, up 13% on the year before.
  • Japan is the largest supplier, with 80.5% of US imports; Taiwan is next, with 10.0%.
  • Korea, South is the cheapest main supplier before and after freight and duty, landing at $124.76/kg.
  • Duty paid averaged 12.7% of the value of imports in August 2026, down 0.1 points on a year earlier.
  • Japan is gaining share: 77.1% over the last 12 months, up from 76.1%.
  • US exports were $88.3M over the last 12 months; the largest market is China, with 35.8%.

US imports, Aug 2026

$1.2M

↓ −2.1% vs Aug 2025

Last 12 months

$21.2M

↑ +13% vs the 12 months before

Average duty paid

12.7%

↓ −0.1 pts vs Aug 2025

Top supplier

Japan

80.5% 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$1.2M
September 2025$2.8M
October 2025$916K
November 2025$1.1M
December 2025$2.3M
January 2026$1.0M
February 2026$1.9M
March 2026$3.1M
April 2026$2.3M
May 2026$1.8M
June 2026$1.9M
July 2026$1.0M
August 2026$1.2M

What changed

  • US imports were $1.2M in August 2026, up 14% from July 2026 and down 2.1% from August 2025.
  • Over the 12 months to August 2026 they totalled $21.2M, up 13% on the 12 months before.
  • Biggest moves in market share since July 2026: Taiwan up from 5.0% to 10.0%, China down from 8.8% to 2.7%.
  • Average price from Taiwan fell 86% since July 2026, to $96.87/kg.
  • Duty paid on imports from Taiwan rose from 3.6% to 10.0% of their value since July 2026.
  • Duty paid on imports from Japan rose from 8.8% to 12.5% of their value since July 2026.

US trade by year

US imports were $21.2M in the 12 months to Aug 2026, down 17% on the 12 months to Aug 2017. US exports were $88.3M, down 76%. In January 2022 the HS 2022 revision moved some goods between this code and 8549.21, 8549.29, 8549.31 and 3 more, 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 2022Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$25.5M
12 months to Aug 2018$26.1M
12 months to Aug 2019$23.3M
12 months to Aug 2020$18.7M
12 months to Aug 2021$37.0M
12 months to Aug 2022$27.9M
12 months to Aug 2023$16.8M
12 months to Aug 2024$21.7M
12 months to Aug 2025$18.9M
12 months to Aug 2026$21.2M
  • Japan
  • Korea, South
  • China
  • Germany
  • All countries
Share of US imports
Show the numbers
PeriodJapanKorea, SouthChinaGermany
12 months to Aug 201779.5%6.8%6.0%2.3%
12 months to Aug 201870.6%15.1%4.8%2.9%
12 months to Aug 201963.1%23.8%5.4%2.9%
12 months to Aug 202050.6%32.1%5.3%4.7%
12 months to Aug 202149.1%36.3%3.5%2.6%
12 months to Aug 202243.7%32.5%5.6%5.8%
12 months to Aug 202364.8%11.9%7.0%4.5%
12 months to Aug 202473.4%14.8%2.7%2.9%
12 months to Aug 202576.1%14.7%3.3%2.1%
12 months to Aug 202677.1%10.8%4.1%2.8%
Duty paid, % of value
Show the numbers
PeriodJapanKorea, SouthChinaGermanyAll countries
12 months to Aug 20170.0%0.0%0.0%0.0%0.0%
12 months to Aug 20180.0%0.0%0.0%0.0%0.0%
12 months to Aug 20190.0%0.0%8.5%0.0%0.5%
12 months to Aug 20200.0%0.0%11.0%0.0%0.6%
12 months to Aug 20210.0%0.0%20.4%0.0%0.7%
12 months to Aug 20220.0%0.0%19.1%0.0%1.1%
12 months to Aug 20230.0%0.0%23.4%0.0%1.6%
12 months to Aug 20240.0%0.0%25.0%0.0%0.7%
12 months to Aug 20253.8%4.6%27.0%2.5%4.6%
12 months to Aug 202612.4%12.1%44.5%12.6%13.6%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$21.2M+13%13.6%+9.0 pts$88.3M−15%
12 months to Aug 2025$18.9M−13%4.6%+4.0 pts$103.7M+17%
12 months to Aug 2024$21.7M+29%0.7%−1.0 pts$88.3M+15%
12 months to Aug 2023$16.8M−40%1.6%+0.6 pts$76.6M−44%
12 months to Aug 2022HS 2022 revision$27.9M−25%1.1%+0.4 pts$135.6M−16%
12 months to Aug 2021$37.0M+98%0.7%+0.1 pts$160.8M−3.2%
12 months to Aug 2020$18.7M−20%0.6%+0.1 pts$166.1M+22%
12 months to Aug 2019$23.3M−11%0.5%+0.5 pts$135.8M−22%
12 months to Aug 2018$26.1M+2.2%0.0%0.0 pts$174.0M−52%
12 months to Aug 2017$25.5M0.0%$365.4M

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
Japan$944K80.5%+11.6 pts$220.41/kg+13%12.5%−0.3 pts
Taiwan$118K10.0%+3.7 pts$96.87/kg+1.0%10.0%−0.9 pts
Belgium$38K3.3%new$4,252/kg10.0%
China$32K2.7%+1.0 pts$458.54/kg−60%37.5%−17.5 pts
Germany$26K2.3%+1.4 pts$3,782/kg−26%10.0%−5.0 pts
Mexico$12K1.1%−1.7 pts$166.15/kg+279%0.0%0.0 pts
Australia$3K0.2%new$711.75/kg12.5%
All countries$1.2M100.0%$207.26/kg+42%12.7%−0.1 pts

The 3 largest suppliers had 92.0% 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$107.90/kg$6.13/kg5.7% of price$10.73/kg9.9% of price$124.76/kg+6.7%
Taiwan$126.58/kg$9.96/kg7.9% of price$10.58/kg8.4% of price$147.13/kg+33%
Japan$249.22/kg$7.95/kg3.2% of price$26.15/kg10.5% of price$283.32/kg−2.6%
China$204.34/kg$11.59/kg5.7% of price$72.75/kg35.6% of price$288.67/kg−74%
Germany$1,414/kg$37.36/kg2.6% of price$141.40/kg10.0% of price$1,593/kg+30%
All countries$196.53/kg$7.62/kg3.9% of price$21.66/kg11.0% of price$225.82/kg−3.7%

Landed at a US port, Korea, South was cheapest, at $124.76/kg: 15.2% below Taiwan.

Landed cost from China fell 74% on a year earlier, to $288.67/kg, mostly on price: $688.70/kg then, $204.34/kg now.

How the market is shifting

Japan gained the most share: 77.1% of US imports over the last 12 months, up from 76.1% in the 12 months before. Korea, South lost the most: 10.8%, down from 14.7%. 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.

  • Japan
  • Korea, South
  • China
  • Germany
  • All countries
Share of US imports
Show the numbers
MonthJapanKorea, SouthChinaGermany
September 202493.0%0.0%3.4%2.1%
October 202477.1%0.0%16.1%3.2%
November 202459.5%30.2%6.1%2.3%
December 202466.6%23.6%2.9%3.1%
January 202578.3%16.8%3.2%0.9%
February 202579.9%9.4%3.1%3.0%
March 202564.1%19.1%4.2%5.7%
April 202582.9%13.9%0.4%0.9%
May 202567.7%28.2%0.5%1.2%
June 202590.5%0.0%2.0%1.9%
July 202575.1%13.7%2.8%1.1%
August 202568.8%19.0%1.7%0.9%
September 202575.7%8.4%9.9%2.7%
October 202570.6%0.7%4.3%10.4%
November 202571.3%19.2%1.2%2.4%
December 202579.0%8.2%5.8%1.1%
January 202692.8%0.0%2.1%4.0%
February 202677.5%17.3%1.1%2.5%
March 202692.2%0.0%4.3%0.6%
April 202664.9%23.3%3.1%3.3%
May 202684.4%7.9%1.4%2.8%
June 202655.2%33.7%1.1%4.3%
July 202678.9%0.3%8.8%2.6%
August 202680.5%0.0%2.7%2.3%
Duty paid, % of value
Show the numbers
MonthJapanKorea, SouthChinaGermanyAll countries
September 20240.0%n/a18.7%0.0%0.6%
October 20240.0%n/a19.0%0.0%3.1%
November 20240.0%0.0%21.7%0.0%1.3%
December 20240.0%0.0%19.2%0.0%0.6%
January 20250.0%0.0%11.2%0.0%0.4%
February 20250.0%0.0%30.8%0.0%1.0%
March 20250.0%0.0%13.0%0.0%0.6%
April 20255.1%10.0%170.0%10.0%6.4%
May 20259.4%10.0%95.3%10.0%9.9%
June 202510.0%n/a55.0%10.0%10.9%
July 202510.0%10.0%55.0%10.0%11.2%
August 202512.8%11.0%55.0%15.0%12.7%
September 202515.0%15.0%55.0%15.0%19.1%
October 202515.0%15.0%55.0%15.0%16.4%
November 202515.0%15.0%49.7%15.0%15.2%
December 202515.0%15.0%45.0%15.0%16.8%
January 202615.0%n/a45.0%15.0%15.6%
February 202614.3%15.0%45.0%14.3%14.8%
March 202610.0%n/a35.0%10.0%11.1%
April 202610.0%10.0%35.0%10.0%10.6%
May 202610.0%10.0%35.0%10.0%10.3%
June 202610.0%10.0%35.0%10.0%10.2%
July 20268.8%0.0%35.1%10.0%10.6%
August 202612.5%n/a37.5%10.0%12.7%

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: all countries 16.0% → 11.0%.
  2. May 2025 · Duty paid: Japan 0.0% → 10.0%, Korea, South 0.0% → 10.0%, all countries 1.0% → 11.1%.

Where it enters the US

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

  1. Jfk International Airport, NY$5.8M · 27.3%
  2. Honolulu International Airport, HI$3.1M · 14.4%
  3. Anchorage, AK$2.5M · 12.0%
  4. Chicago, IL$2.2M · 10.2%
  5. Los Angeles International Airport, CA$1.6M · 7.7%

Where US exports go

US exports were $8.2M in August 2026, down 21% from August 2025, and $88.3M over the last 12 months, down 15% on the 12 months before. Fastest-growing market with 3% or more of US exports: China, up 72%.

MarketLast 12 monthsSharevs 12 months before
China$31.6M35.8%+72%
Japan$16.4M18.6%−48%
Hong Kong$16.3M18.4%−16%
Korea, South$10.3M11.6%+13%
Mexico$5.2M5.9%−14%
Taiwan$3.8M4.3%−75%
Germany$1.0M1.2%+29%
Canada$749K0.8%+30%
Other countries (36)$3.1M3.5%+21%
All countries$88.3M100.0%−15%

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; 97 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$2.43Bin 2025−1.0%$91.5M3.8%
Taiwan$421.5Min 2024+3.5%$45.8MUS records $18.3M10.9%
Korea, South$394.8Min 2025+7.7%$72.9MUS records $8.4M18.5%
Hong Kong$331.7Min 2025−6.7%$17.5M5.3%
Japan$145.8Min 2025−16%$41.6M28.5%
India$23.3Min 2025+14%$23K0.1%
Egypt$12.5Min 2025+10010%$38K0.3%
Mexico$11.0Min 2025−38%$4.4M39.8%

The biggest market outside the US is China, which imported $2.43B of this product in 2025, 3.8% of that from the US.

The US supplies 28.5% of imports into Japan and 39.8% into Mexico, but under 10% into China, Hong Kong and India.

Of these, imports into India grew fastest: up 14% from 2024 to 2025.

Other products under heading 9001: optical fibers and optical fiber bundles; optical fiber cables not elsewhere specified; sheets and plates of polarizing material; optical elements, unmounted. 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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