The technologies of CNPC 's lubricant oil were studied in.1950s. After a decade of development CNPC has, built a professional.Company integrating the manufacture research and,,Development marketing and, service. Now a lot of distinctive.Technologies have been developed among which, the representative.Is the lubricant products containing, 4 classes 11.Series and 31 specialized items. These products cover many.Fields such as technical development of, product formulas additives.As well as lubricant analysis and appraisal.
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