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Petróleo Brasileiro S.A. é uma empresa de capital aberto, cujo acionista majoritário é o Governo do Brasil, sendo, portanto, uma empresa estatal de economia mista.
Orbit Gas Co Inc is a Henderson, KY-based company in the Energy and Utilities sector.
Brahma Compression is a Calgary, AB-based company in the Energy & Utilities sector.
Penn Virginia Corporation is an independent oil and gas company primarily engaged in the development, exploration and production of natural gas and oil in various domestic onshore regions including East Texas, the Mid-Continent, Appalachia, Mississippi