Group 1 - Brazil's foreign trade committee (GECEX) has modified the anti-dumping tax on PVC-S resin imported from the United States, changing the rate from 8.2% to CIF 43.7% effective immediately [1] - The decision is related to products under the Mercosur tax code 3904.10.10 [1] - Brazil has a history of anti-dumping investigations on PVC-S resin from the U.S. and Mexico, with multiple reviews and extensions of the tax since 1992 [2] Group 2 - The fifth anti-dumping sunset review initiated in 2021 resulted in a five-year extension of the anti-dumping tax for the U.S. at 8.2% and for Mexico at 13.6%, although the tax on Mexico was suspended due to uncertainties regarding future import trends [2] - The initial investigation in 1992 led to subsequent reviews in 1997, 2003, 2009, and 2015, all resulting in affirmative decisions to extend the tax [2] - The latest decision reflects ongoing protective measures for domestic producers like Braskem S.A. [2]