Energy
| Sun 12 Apr 2026
Beijing, April 13 -- Offshore Oil Engineering has received a patent for Sonar Installation Device of Ditching Equipment. This invention was developed by Liu Kai, Wang Lei, Li Jiannan, Lu Zhengchao, Niu Qiang, Lyu Weijun, Hong Shuai, Shang Zhimin, Wei Wei, Shao Detian, Fan Qiang, Han Yu, Wu Shan, Zhu Yinwei, Shi Lijiang and Li Li..