# Chlorinated Isocyanurates From the People's Republic of China: Continuation of Countervailing Duty Order
**AGENCY:**
Enforcement and Compliance, International Trade Administration, Department of Commerce.
**SUMMARY:**
As a result of the determinations by the U.S. Department of Commerce (Commerce) and the U.S. International Trade Commission (ITC) that revocation of the countervailing duty (CVD) order on chlorinated isocyanurates from the People's Republic of China (China) would likely lead to the continuation or recurrence of countervailable subsidies and material injury to an industry in the United States, Commerce is publishing a notice of continuation of this CVD order.
**DATES:**
Applicable November 21, 2025.
**FOR FURTHER INFORMATION CONTACT:**
David De Falco, Trade Agreements Policy and Negotiations, Enforcement and Compliance, International Trade Administration, U.S. Department of Commerce, 1401 Constitution Avenue NW, Washington, DC 20230; telephone: (202) 482-2178.
**SUPPLEMENTARY INFORMATION:**
**Background**
On November 13, 2014, Commerce published in the *Federal Register* the CVD order on chlorinated isocyanurates from China. [^1] On April 1, 2025, the ITC instituted, [^2] and Commerce initiated, [^3] the second sunset review of the *Order,* pursuant to section 751(c) of the Tariff Act of 1930, as amended (the Act). As a result of its review, Commerce determined that revocation of the *Order* would likely lead to the continuation or recurrence of countervailable subsidies, and therefore, notified the ITC of the magnitude of the subsidy rates likely to prevail should the *Order* be revoked. [^4]
[^1]*See Chlorinated Isocyanurates from the People's Republic of China: Countervailing Duty Order,* 79 FR 67424 (November 13, 2014) ( *Order* ).
[^2]*See Chlorinated Isocyanurates from China; Institution of a Five-Year Review,* 90 FR 14378 (April 1, 2025).
[^3]*See Initiation of Five-Year (Sunset) Reviews,* 90 FR 14354 (April 1, 2025).
[^4]*See Chlorinated Isocyanurates from People's Republic of China: Final Results of the Expedited Second Sunset Review of the Countervailing Duty Order,* 90 FR 36423 (August 4, 2025)., and accompanying Issues and Decision Memorandum.
On November 21, 2025, the ITC published its determination, pursuant to sections 751(c) and 752(a) of the Act, that revocation of the *Order* would likely lead to continuation or recurrence of material injury to an industry in the United States within a reasonably foreseeable time. [^5]
[^5]*See Chlorinated Isocyanurates from China,* 90 FR 52698 (November 21, 2025) ( *ITC Final Determination* ).
**Scope of the Order**
The products covered by this order are chlorinated isocyanurates. Chlorinated isocyanurates are derivatives of cyanuric acid, described as chlorinated s-triazine triones. There are three primary chemical compositions of chlorinated isocyanurates: (1) trichloroisocyanuric acid (TCCA) (Cl3(NCO)3), (2) sodium dichloroisocyanurate (dihydrate) (NaCl2(NCO)3 X 2H2O), and (3) sodium dichloroisocyanurate (anhydrous) (NaCl2(NCO)3). Chlorinated isocyanurates are available in powder, granular and solid ( *e.g.,* tablet or stick) forms.
Chlorinated isocyanurates are currently classifiable under subheadings 2933.69.6015, 2933.69.6021, 2933.69.6050, 3808.50.4000, 3808.94.5000, and 3808.99.9500 of the Harmonized Tariff Schedule of the United States (HTSUS). The tariff classification 2933.69.6015 covers sodium dichloroisocyanurates (anhydrous and dihydrate forms) and trichloroisocyanuric acid. The tariff classifications 2933.69.6021 and 2933.69.6050 represent basket categories that include chlorinated isocyanurates and other compounds including an unfused triazine ring. The tariff classifications 3808.50.4000, 3808.94.5000 and 3808.99.9500 cover disinfectants that include chlorinated isocyanurates. The HTSUS subheadings are provided for convenience and customs purposes. The written description of the scope of this order is dispositive.
**Continuation of the Order**
As a result of the determinations by Commerce and the ITC that revocation of the *Order* would likely lead to continuation or recurrence of countervailable subsidies and material injury to an industry in the United States, pursuant to section 751(d)(2) of the Act, Commerce hereby orders the continuation of the *Order.* U.S. Customs and Border Protection will continue to collect CVD cash deposits at the rates in effect at the time of entry for all imports of subject merchandise.
The effective date of the continuation of the *Order* will be November 21, 2025. [^6] Pursuant to section 751(c)(2) of the Act and 19 CFR 351.218(c)(2), Commerce intends to initiate the next five-year reviews of the *Order* not later than 30 days prior to fifth anniversary of the date of the last determination by the ITC.
[^6]*See ITC Final Determination.*
**Administrative Protective Order (APO)**
This notice also serves as a final reminder to parties subject to an APO of their responsibility concerning the return or destruction of proprietary information disclosed under APO in accordance with 19 CFR 351.305(a)(3), which continues to govern business proprietary information in this segment of the proceeding. Timely written notification of the return or destruction of APO materials, or conversion to judicial protective order, is hereby requested. Failure to comply with the regulations and terms of an APO is a violation which is subject to sanction.
**Notification to Interested Parties**
This five-year (sunset) review and this notice are in accordance with sections 751(c) and 751(d)(2) of the Act, and published in accordance with section 777(i) of the Act and 19 CFR 351.218(f)(4).
Dated: November 21, 2025.
Christopher Abbott,
Deputy Assistant Secretary for Policy and Negotiations, performing the non-exclusive functions and duties of the Assistant Secretary for Enforcement and Compliance.