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In December 2009, an appraisal assembly of the high-temperature and pressure-bearing composites of Xi’an Yongxing Generation & Construction Co., Ltd was once effectively held in Xi’an Global Convention Middle. Mr. Lu Dawei, secretary of China Petroleum Committee participated this assembly and about 50 professionals and students from well-logging corporations and factories additionally joined this assembly.

In December 2009, an appraisal meeting of the high-temperature and pressure-bearing composites of Xi’an Yongxing Technology & Development Co., Ltd was successfully held in Xi’an International Conference Center. Mr. Lu Dawei, secretary of China Petroleum Committee participated this meeting and about 50 experts and scholars from well-logging companies and factories also joined this meeting.