Spain's Cheap Methionine Hit with Final U.S. Antidumping Duties
Published Date: 9/14/2026
Notice
Summary
The U.S. Department of Commerce found that Adisseo España S.A., the only Spanish company reviewed, sold methionine in the U.S. at unfairly low prices from September 2023 to August 2024. Because of this, certain extra duties will apply starting September 14, 2026, to keep things fair for American businesses. This decision affects importers and could change costs for methionine buyers.
Analyzed Economic Effects
4 provisions identified: 0 benefits, 4 costs, 0 mixed.
Cash deposit rates take effect
For shipments of methionine entered or withdrawn for consumption on or after the publication date (September 14, 2026), the cash deposit rate for Adisseo will equal the final weighted-average dumping margin of 8.20%. The cash deposit rate for all other producers and exporters remains 37.53% ad valorem.
Unreviewed entries may face 37.53%
Commerce will apply its automatic assessment practice to entries of methionine during the period of review that were produced or exported by Adisseo but for which Adisseo did not know the goods sold to an intermediary were destined for the United States. In such cases, Customs and Border Protection will liquidate those unreviewed entries at the all-others rate of 37.53% if there is no rate for the intermediate company.
File reimbursement certificate or risk double duties
Importers must file a certificate about reimbursement of antidumping duties under 19 CFR 351.402(f)(2) before liquidation of the relevant entries from the period of review. If you fail to file this certificate, Commerce may presume reimbursement occurred and assess double antidumping duties.
Adisseo hit with 8.20% duty
If you import methionine from Adisseo España S.A., Commerce found a weighted-average dumping margin of 8.20% for the period September 1, 2023 through August 31, 2024. That 8.20% margin is the basis for antidumping duties assessed on Adisseo's examined sales for that period.
Personalized for You
How does this regulation affect your finances?
Personalize government policy and PRIA will tell you what this federal register document means for your household, plus every other regulation we track. PRIA reads each provision against your financial profile to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2025-05481, Regulations Enhancing the Administration of the Antidumping and Countervailing Duty Trade Remedy Laws; Correction
The Department of Commerce fixed some accidental mistakes in their trade rules that were published in December 2024. They put back important deadlines and details that were accidentally deleted and corrected a couple of typos. These fixes take effect on March 31, 2025, helping businesses and officials follow clear and accurate trade rules without confusion or delays.
2026-20777, Certain Paper Shopping Bags From Cambodia: Preliminary Results of Antidumping Duty Administrative Review; 2024-2025
The U.S. Department of Commerce found that some paper shopping bags from Cambodia were sold in the U.S. for less than their normal price between January 2024 and June 2025. This means certain Cambodian bag makers might have to pay extra duties to keep things fair. Businesses involved should watch for final decisions and possible changes in costs soon.
2026-20779, Passenger Vehicle and Light Truck Tires From Thailand: Preliminary Results and Rescission, in Part, of Antidumping Duty Administrative Review; 2024-2025
The U.S. Department of Commerce found that tires from Thailand were sold in the U.S. for less than their normal price between July 2024 and June 2025. This means some importers might have to pay extra duties to keep things fair. The review process had some delays due to government shutdowns, but now the preliminary results are out and open for comments.
2026-20778, Certain Hot-Rolled Steel Flat Products From the Republic of Korea: Final Results of Countervailing Duty Administrative Review; 2023
The U.S. Department of Commerce found that Hyundai Steel and POSCO from South Korea got unfair government help on their hot-rolled steel in 2023. Because of this, extra taxes (called countervailing duties) will apply to their steel imports starting October 9, 2026. This means U.S. steel buyers might pay a bit more, and Korean producers will have to adjust to these new rules.
2026-20690, Oleoresin Paprika From India: Antidumping Duty Order and Countervailing Duty Order
Starting October 8, 2026, the U.S. is putting extra taxes on oleoresin paprika imported from India because it's being sold too cheaply and getting unfair government help. This move protects American paprika producers from losing business and means importers will have to pay more when bringing in this spice. If you import or sell this paprika, get ready for new costs and rules!
2026-20691, Certain Paper Shopping Bags From Taiwan: Preliminary Results and Rescission, in Part, of Antidumping Duty Administrative Review; 2024-2025
The U.S. Department of Commerce reviewed paper shopping bags from Taiwan sold between January 2024 and June 2025. They found that Haur Tyi Paper Bag Co. didn’t sell these bags at unfairly low prices, and they stopped reviewing five other companies because no one asked for it. This means no extra duties for Haur Tyi right now, and the review process is moving forward with some deadlines adjusted due to a government shutdown.
Previous / Next Documents
Previous: 2026-18698, Glycine From Japan: Preliminary Results and Rescission, in Part, of Antidumping Duty Administrative Review, 2024-2025
The U.S. Department of Commerce found that some Japanese glycine sellers sold their product for less than normal between June 2024 and May 2025. This means antidumping duties might apply to keep things fair for U.S. businesses. The review deadline was pushed back due to government shutdowns, and now the public can share their thoughts before final decisions.
Next: 2026-18700, Certain Quartz Surface Product From India: Preliminary Results, Intent To Rescind, in Part, and Rescission, in Part of Antidumping Duty Administrative Review; 2024-2025
The U.S. Department of Commerce found that Cuarzo and Beyyond Rocks from India sold quartz surfaces at unfairly low prices from June 2024 to May 2025, while Pokarna Engineered Stone did not. They’re stopping the review for 53 companies and plan to stop it for 4 more. This could affect import duties and business costs starting September 14, 2026.