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Polymer Services is a Plainville, KS-based company in the Energy and Utilities sector.
Petro Service is a Saint John, NB-based company in the Energy & Utilities sector.
Munger Oil Information is a Joshua Tree, CA-based company in the Energy and 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