DHC Solvent Chemie GmbH is one of Europe憇 leading manufacturers of solvents and other speciality products from oil. Precision, safety and a commitment to the environment in the production, storage and distribution of customised products are the qualities that mark out the Mülheim-based company. DHC is a subsidiary of Ruhr Oel GmbH, a joint venture of BP Europa SE and Rosneft Holdings Limited S.A. with each partner holding a share of 50%....