Cellulose nitrates (including collodions), in primary forms

US trade by year

US imports were $146.3M in the 12 months to Aug 2026, up 110% on the 12 months to Aug 2017. US exports were $21.9M, up 499%. 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.

• Brazil
• Czech Republic
• Germany
• Thailand
• All countries

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.

The 3 largest suppliers had 70.8% 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

Landed at a US port, Thailand was cheapest, at $3.96/kg: 13.9% below Taiwan.

Landed cost from Germany rose 38% on a year earlier, to $5.72/kg, mostly on price: $3.37/kg then, $4.85/kg now.

How the market is shifting

Brazil gained the most share: 37.1% of US imports over the last 12 months, up from 22.0% in the 12 months before. Czech Republic lost the most: 23.0%, down from 30.9%. 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.

• Brazil
• Czech Republic
• Germany
• Thailand
• All countries

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. December 2025–March 2026 · Duty paid: Brazil 54.9% → 15.2%, Thailand 24.2% → 15.2%, China 60.1% → 41.2%, Taiwan 25.2% → 15.2%, all countries 29.0% → 15.7%.
   • Implementing Certain Tariff-Related Elements of the Framework for a United States-Switzerland-Liechtenstein Agreement on Fair, Balanced, and Reciprocal TradeDec 18, 2025 · International Trade Administration
   • Implementing Certain Tariff-Related Elements of the U.S.-EU Framework on an Agreement on Reciprocal, Fair, and Balanced TradeSep 25, 2025 · Office of the US Trade Representative
2. March–September 2025 · Duty paid: Brazil 1.6% → 54.7%, Czech Republic 5.2% → 13.0%, Germany 5.2% → 14.0%, Thailand 0.0% → 24.0%, China 19.6% → 55.1%, Taiwan 12.0% → 22.9%, all countries 5.2% → 21.6%.
   • Implementing Certain Tariff-Related Elements of the U.S.-EU Framework on an Agreement on Reciprocal, Fair, and Balanced TradeSep 25, 2025 · Office of the US Trade Representative
3. May 2024 · Duty paid: China 7.6% → 30.1%.
4. September 2023 · Duty paid: China 24.5% → 18.0%.
5. April 2023 · Duty paid: China 12.0% → 24.5%.
6. May 2022 · Duty paid: China 13.2% → 3.8%.
7. July 2021 · Duty paid: China 6.7% → 12.0%.
8. January 2021 · Duty paid: China 30.1% → 7.2%.
9. July 2018 · Duty paid: China 5.1% → 11.6%.
10. July 2017 · Duty paid: Brazil 5.2% → 0.0%, Thailand 5.2% → 0.0%.
    • Results of the 2016/2017 Annual Generalized System of Preferences Review and Initiation of a Country Practice Review of BoliviaJul 10, 2017 · Office of the US Trade Representative

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 3912.20

• Notice of Action: Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal DeforestationJul 20, 2026 · Office of the US Trade Representative
• Implementing Certain Tariff-Related Elements of the Framework for a United States-Switzerland-Liechtenstein Agreement on Fair, Balanced, and Reciprocal TradeDec 18, 2025 · International Trade Administration

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; 102 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.

The biggest market outside the US is Canada, which imported $76.0M of this product in 2025, 11.2% of that from the US.

Of these, imports into Canada grew fastest: up 89% from 2024 to 2025.

Related products

Other products under heading 3912: cellulose and its chemical derivatives not elsewhere specified, in primary forms. US trade over the 12 months to August 2026.