Petrobras resumed full operations at the Duque de Caxias Refinery (Reduc) on Thursday, June 4. The facility ranks as one of Brazil's largest refineries.

The refinery serves as a cornerstone of the company’s R$33 billion investment plan for the state of Rio de Janeiro.

This restart coincides with U.S. government deliberations regarding a 25% tariff on Brazilian imports. U.S. officials are investigating potential unfair trade practices.

The proposed tariffs introduce a significant external risk for Petrobras. No immediate market reaction to the news has been recorded.