TARIFF TRACKER
Commerce issues an antidumping duty order on MDI from China
Commerce amended its final dumping determination and issued an antidumping duty order on methylene diphenyl diisocyanate from China. Cash deposit rates are 87.25 percent for listed producer and exporter combinations and 161.61 percent for the China-wide entity.
Updated October 12, 2026
STATUS
In effect
·
EFFECTIVE
·
AD/CVD
RATE
87.25% to 161.61%
87.25% for listed producer/exporter combinations, 161.61% for the China-wide entity
COUNTRIES
China
PRODUCT FAMILIES
Chemicals/plastics
HTS CHAPTERS
29, 39, 38, 35
COVERED GOODS
Methylene diphenyl diisocyanate from China, currently classifiable under HTSUS 2929.10.8010 and 3909.31.0000, and possibly under 3824.99.2600, 3909.50.1000, 3909.50.2000, 3909.50.5000, 3824.99.2900, 3506.91.5000, 3911.90.4500, 3921.13.5000, and 3920.99.5000.
EXCLUSIONS
Excludes mixtures where the combined MDI component is less than 40 percent of total mixture weight, partially reacted MDI with NCO content less than 10 weight percent, and separately packaged polyol that would not be in scope if entered on its own. Provisional-gap entries on or after March 14, 2026 through the day before publication of the ITC final injury determination are to be liquidated without antidumping duties.
WHAT TO DO (OUR GUIDANCE, NOT LEGAL ADVICE)
Check imports against the written MDI scope and the listed HTSUS subheadings. For entries in the provisional-measures gap, review whether Commerce instructs CBP to liquidate without antidumping duties.
SOURCES
International Trade Administration notice, 91 FR 38393 (June 25, 2026)
QUOTES FROM THE SOURCE
Signed: "Dated: June 17, 2026. Scot Fullerton, Acting Deputy Assistant Secretary for Antidumping and Countervailing Duty Operations." (source)
Effective date: "DATES: Applicable June 25, 2026." (source)
Countries: "Commerce is issuing an antidumping duty (AD) order on methylene diphenyl diisocyanate (MDI) from the People's Republic of China (China)." (source)
Rate: "Covestro Polymers (China) Co., Covestro Polymers 87.25 Ltd. (China) Co., Ltd." (source)
Rate: "China-Wide Entity............... .................. 161.61" (source)
Covered goods: "The merchandise subject to this investigation is methylene diphenyl diisocyanate (MDI), which is an aromatic polyisocyanate material whose composition includes two or more isocyanate groups" (source)
Covered goods: "This merchandise is currently classifiable under Harmonized Tariff Schedule of the United States (HTSUS) subheadings 2929.10.8010 and 3909.31.0000." (source)
Exclusions: "The scope does not include mixtures of MDI with other materials, when the combined MDI component comprises less than 40 percent of the total weight of the mixture." (source)
Exclusions: "The scope does not include partially reacted MDI when its NCO content is less than 10 weight percentage." (source)
Status: "Commerce is amending the Final Determination to reflect the correction of the ministerial errors as described in the Ministerial Error Memorandum." (source)
Checked against source
on
Amended final determination and AD order A-570-200 on MDI from China: Covestro and Wanhua/Shandong Mingko combinations 87.25 percent, China-wide 161.61 percent; applicable June 25, 2026 (dated June 17); HTS 2929, 3506, 3824, 3909, 3911, 3920, 3921 (Ch. 29, 35, 38, 39); FR API search by case number on 2026-10-12 shows no later revocation or amendment.
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