Why Chinese oil firms are bucking the oil slump By: CNBC.com News February 05, 2015 at 00:23 AM EST Global oil companies are gritting their teeth as crude's slump cuts into their profits, but reports suggest Chinese national oil firms may be immune. Read More >> Related Stocks: Barclays Plc ADR Cnooc Ltd PetroChina Petrochina Co. Ltd Sinopec Shangai Petrochemical Company Ltd ADR