Construction
| Mon 27 Jul 2026
Beijing, July 27 -- Shaanxi Yanchang Petroleum Group has submitted a patent application for Intelligent Control Plunger for Drainage Gas Recovery. Wu Jinqiao, Ma Zhongguo, Wang Shuai, Wang Quanbo, Tang Yonghuai, Yao Jun, Hayashi Susumu, Hao Qi, Yan Yingfei, Feng Yang, Zhou Longchao and Wang Xiangzeng developed the invention.
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