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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.
Colt Services Inc is a La Porte, TX-based company in the Energy and Utilities sector.
Chief Oil and Gas is a Dallas, TX-based company in the Energy & Utilities sector.
Caprock Oil and Gas Inc is a Andrews, TX-based company in the Energy and Utilities sector.
R.J.V. Gas Field Services is a Vegreville, AB-based company in the Energy & Utilities sector.