 HOUSTON--BUSINESS WIRE--- OEC chemicals--Orion Engineered Carbons S.A. NYSE: OEC, a worldwide supplier of specialty and high-performance carbon black, today announced that it has completed a multi-year upgrade to its Qingdao, China facility. A new, state-of-the-art, cogeneration unit was installed, which boosts the sites sustainability by recovering more energy from the facility. This is an example of what is good for the environment can be good business too. Similar to the recent cogeneration unit upgrad 