[Provisional Translation]
December 25, 2025
Ministry of Finance
Ministry of Economy,
Trade and Industry
Initiation of an Expiry Review of the Anti-Dumping Duties on Potassium Hydroxide originating in the Republic of Korea and the People’s Republic of China
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On August 8, 2025, the Minister of Finance received an application for extension of the period* of imposition of the anti-dumping duties on potassium hydroxide ** originating in the Republic of Korea and the People’s Republic of China *** from Potassium Product Manufacturers Association. The Ministry of Finance (MOF) and the Ministry of Economy, Trade and Industry (METI) examined the application in accordance with the WTO Agreements and related domestic laws and regulations. The results showed that the application had sufficient evidence to justify the initiation of an expiry review. Therefore, the ministries have decided to initiate the expiry review (Public Notice on December 25, 2025).
*Note:The Government of Japan imposes the anti-dumping duties on potassium hydroxide originating in the Republic of Korea (the rates of the anti-dumping duty: 49.5%) and the People’s Republic of China (the rates of the anti-dumping duty: 73.7%), where the taxable period is from August 9, 2016, to August 12, 2026.
**Note:Generally, in the form of liquid dissolved in water or white flake solid, and mainly used as a material for potassium salts such as potassium carbonate, chemical fertilizer, and detergents, etc.
***Note:Excluding the regions of Hong Kong and Macao.
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The expiry review is to be concluded within one year, in principle. The ministries will provide opportunities to present evidence for interested parties and carry out a factual investigation of companies in the Republic of Korea, the People’s Republic of China and Japan.
Based on the results of the expiry review, the Government of Japan will determine whether or not there is the likelihood that the importation of the dumped product and the fact of material injury, etc., to the domestic industry caused by the importation of the dumped product would be likely to continue or recur after the expiry of the period, in accordance with the provisions of the international rules under the WTO Agreements and related domestic laws and regulations, and make a decision on whether or not to extend the period of imposition of the anti-dumping duties on the product subject to the expiry review.Reference
