# 2026-12771: U.S. Slaps Duties on Chinese Industrial Chemical Imports

2026-12771, Methylene Diphenyl Diisocyanate From the People's Republic of China: Amended Final Determination of Sales at Less Than Fair Value and Antidumping Duty Order, is a Federal Register notice from Commerce Department, International Trade Administration published 2026-06-25, effective 2026-06-25; PRIA reads it as touching household money (as of 2026-07-02).

- Canonical: https://policyrisk.com/federal-register/2026-12771
- As of: 2026-07-02
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-12771
- Title: Methylene Diphenyl Diisocyanate From the People's Republic of China: Amended Final Determination of Sales at Less Than Fair Value and Antidumping Duty Order
- Type: Notice
- Agencies: Commerce Department; International Trade Administration
- Citation: 91 FR 38393
- Published: 2026-06-25
- Effective: 2026-06-25
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-07-02

## In one line

U.S. Slaps Duties on Chinese Industrial Chemical Imports

## Summary

The U.S. government found that methylene diphenyl diisocyanate (MDI) from China is being sold unfairly cheap, hurting American businesses. They fixed some small errors in their earlier decision and officially started charging extra duties on these imports starting June 25, 2026. This means Chinese MDI will cost more in the U.S., helping local companies compete fairly.

## Abstract

Based on affirmative final determinations by the U.S. Department of Commerce (Commerce) and the U.S. International Trade Commission (ITC), Commerce is issuing an antidumping duty (AD) order on methylene diphenyl diisocyanate (MDI) from the People's Republic of China (China). In addition, Commerce is amending the final determination of sales at less-than-fair-value (LTFV) to correct ministerial errors.

## Effects PRIA read

- Antidumping Duties Imposed on Chinese MDI: cost, high. Commerce issued an antidumping duty order on methylene diphenyl diisocyanate (MDI) from China effective June 25, 2026. U.S. Customs and Border Protection (CBP) must require cash deposits equal to the estimated weighted-average dumping margins listed (87.25% for Covestro Polymers and Wanhua-related…
- Retroactive Assessment Window Defined: mixed, medium. Antidumping duties will be assessed on unliquidated entries of MDI from China entered or withdrawn for consumption on or after September 16, 2025, the date of the Preliminary Determination, but entries made on or after March 14, 2026 (the day provisional measures ended) until the day before publica…
- Amended Determination Corrects Calculations: mixed, low. Commerce amended its final determination to correct ministerial errors in calculating surrogate values for natural gas and nitrogen, the surrogate selling, general, and administrative (SG&A) expense ratio, the surrogate profit ratio, and normal value. These corrections are reflected in the Amended…

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## Sources
- [2026-12771 on federalregister.gov](https://www.federalregister.gov/documents/2026/06/25/2026-12771/methylene-diphenyl-diisocyanate-from-the-peoples-republic-of-china-amended-final-determination-of)
- [2026-12771 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-06-25/pdf/2026-12771.pdf)

## Related
- [Previous: 2026-12770, Agency Information Collection Activities; Extension of Collection; Comment Requ…](https://policyrisk.com/federal-register/2026-12770)
- [Next: 2026-12772, Center for Scientific Review; Amended Notice of Meeting](https://policyrisk.com/federal-register/2026-12772)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-12771 (as of 2026-07-02).