On August 20, 2019, the Mexican Ministry of Economic Affairs issued an announcement in the official gazette to finalize the anti-dumping sunset review of the ferromanganese originating in Ukraine, and decided to extend the current anti-dumping duty of 16.59% for five years. The starting date is 2018. September 25. This case involves the TIGIE tax number under the 7202.30.01 product.

On May 15, 2002, Mexico initiated an anti-dumping investigation on silicomanganese originating in Ukraine. On September 24, 2003, the Mexican Ministry of Economic Affairs issued an announcement in the official gazette to impose an anti-dumping final ruling on the ferromanganese originating in Ukraine, and imposed an anti-dumping duty of 51.28%. On September 24, 2008, Mexico initiated the first anti-dumping sunset review investigation on the ferromanganese originating in Ukraine. On February 8, 2010, Mexico made the first anti-dumping sunset review of the ferromanganese originating in Ukraine, and decided to change the anti-dumping duty from 51.28% to 16.59%, valid for five years. On September 6, 2013, the Mexican Ministry of Economic Affairs issued an announcement in the official gazette to initiate a second anti-dumping sunset review investigation on the ferromanganese originating in Ukraine. On October 9, 2014, Mexico made a second anti-dumping sunset review of the ferromanganese originating in Ukraine and decided to extend the anti-dumping tax period by five years. On September 24, 2018, the Mexican Ministry of Economic Affairs issued an announcement in the official gazette, which should be the national company Compa.íaMineraAutlán, S.A.B.deC.V. The application decided to initiate a third anti-dumping sunset review investigation for the ferromanganese originating in Ukraine. The dumping investigation period is from July 1, 2017 to June 30, 2018, and the damage investigation period is July 1, 2013. Until June 30, 2018.