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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.
C E Oil Tools is a Lafayette, LA-based company in the Energy and Utilities sector.
Transport Service Co is a Oak Brook, IL-based company in the Energy & Utilities sector.
Harvard Corporation is a Evansville, WI-based company in the Energy and Utilities sector.