On November 5, 2020, the Mexican Ministry of Economic Affairs issued an announcement in the official gazette that, in response to the application of the Mexican company Tubos de Acero de México, SA, it decided to start the seamless steel pipe (Spanish: tubería de acero sin costura) originating in Japan. During the fourth anti-dumping sunset review, the anti-dumping measures determined by the final ruling of the original trial continued to be effective during the investigation. The announcement will take effect the day after the announcement. The dumping investigation period in this case is from July 1, 2019 to June 30, 2020, and the damage investigation period is from July 1, 2015 to June 30, 2020. The TIGIE tax numbers of the products involved are 7304.11.01, 7304.11.02, 7304.11.03, 7304.11.99, 7304.19.01, 7304.19.02, 7304.19.03, 7304.19.91, 7304.19.99, 7304.39.10, 7304.39.11 , 7304.39.12, 7304.39.13, 7304.39.14, 7304.39.15, 7304.39.91, 7304.39.92, 7304.39.99, 7304.59.11, 7304.59.12, 7304.59.13, 7304.59.14, 7304.59.15, 7304.59 .16, 7304.59.91, 7304.59.92 and 7304.59.99.