SINGAPORE (ICIS)--Moodys Investors Service has placed the credit ratings of major energy firms across the world under review for possible downgrades, with crude prices hovering at their lowest in more than 10 year, the credit ratings firm said on Friday. The list includes Anglo-Dutch Shell and French Total in Europe, Mexicos state-owned Petroleos Mexicanos (Pemex), as well others in the Europe, Middle East and Africa (EMEA) region.
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