CLG is the leading developer and supplier of advanced hydrocracking technology. Hydrocracking innovation at CLG began more than 50 years ago with Chevron's invention of modern hydrocracking. Since then, CLG has continued to invest in the research and development of new and unique hydrocracking processes and technologies. We are also a leading process technology licensor for refining technologies and alternative source fuels, as well as a global leader in catalyst system supply. We offer the most complete bottom-of-the-barrel solution for upgrading heavy oil residues. For more detailed information, browse our sidebar navigation for specific information on hydroprocessing, coking, base oils, biofuels or catalysts.