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Harper Oil Co. is a Springfield, IL-based company in the Energy & Utilities sector.
Encana Corporation is a company engaged in hydrocarbon exploration.
PetroLiance LLC is one of the leading companies in the Energy & Utilities sector.
isolationequipment is a Red Deer, AB-based company in the Energy & Utilities sector.
Intergulf Corporation is a Pasadena, TX-based company in the Energy and Utilities sector.