CHICAGO--(BUSINESS WIRE)--The corruption scandal surrounding Petroleo Brasileiro S.A.'s (Petrobras; Fitch Issuer Default Rating 'BBB'/Outlook Stable) contracting practices has so far affected the credit quality of some of its suppliers more than its own, according to Fitch Ratings. In response, Fitch has published a report highlighting the questions most frequently raised, as well as the agency's views on the potential credit implications for Petrobras' suppliers, construction companies and dri


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