U.S. Keeps Antidumping Duties on Brown Aluminum Oxide From China
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On June 4, 2025, the U.S. Department of Commerce published its final results for the fourth “sunset review” of antidumping duties on refined brown aluminum oxide from China. Commerce decided that canceling (revoking) the duties would likely lead to more dumping of this material at very high rates.
The review looked at refined brown aluminum oxide, which is also called brown fused alumina or artificial corundum. This product comes from China.
The antidumping duty order has been in place since November 19, 2003. The review is required every five years under U.S. law (section 751(c) of the Tariff Act of 1930).
Domestic companies in the U.S. took part in this review. They included Great Lakes Minerals, LLC, Imerys Niagara Falls, Inc., U.S. Electrofused Minerals, Inc., and Washington Mills. These companies said they wanted to keep the duties in place. The Department of Commerce did not get any participation from companies in China.
After looking at all information, Commerce found that if the order were removed, dumping by Chinese companies would likely start again or get worse. The likely dumping rate would be as high as 135.18 percent.
Commerce’s final decision is detailed in a public “Issues and Decision Memorandum.” This document is available at the Enforcement and Compliance’s Antidumping and Countervailing Duty Centralized Electronic Service System (ACCESS) online at https://access.trade.gov.
This notice also tells all involved parties to follow the rules for handling confidential information. If they had access to protected information during the review, they must return or destroy it according to the instructions.
Commerce’s decision was signed by Christopher Abbott, Deputy Assistant Secretary for Policy and Negotiations.
The results of this review were made official on June 4, 2025, and keep the existing antidumping duties in place.
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