PetroChina has recently separated the lubricants assets of the two oil refining enterprises at Liaohe Oil Field and Yumen Oil Field and transferred them to PetroChina Lubricating Oil Company. As a result, the lubricating oil company has currently nine regional lubricants production plants nationwide with six regional sales centers and two research centers, forming a large-scale lubricants complex with integration of production, marketing and technical development. PetroChina has recently separated the lubricants assets of the two oil refining enterprises at Liaohe Oil Field and Yumen Oil Field and transferred them to PetroChina Lubricating Oil Company. As a result, the lubricating oil company has currently nine regional lubricants production plants nationwide with six regional sales centers and two research centers, forming a large-scale lubricants complex with integration of production, marketing and technical development.