 HOUSTON--BUSINESS WIRE--- OEC chemicals--Orion Engineered Carbons S.A. NYSE: OEC, a global supplier of specialty and high-performance carbon black, today updated its previously announced Adjusted EBITDA guidance for the fourth quarter of 44 million to 55 million that was included within its third quarter earnings presentation on November 5, 2020. Updated Adjusted EBITDA guidance for the fourth quarter is now in the range of 64 million to 67 million. Our adjusted guidance is predominantly attributable t 