Oil & Gas
| Mon 06 Apr 2026
Beijing, April 7 -- PetroChina has submitted a patent application for Ring Contact Cable Seal Joint. This invention was developed by Yang Bo, Zhou Ying, Yu Ping, Liu Jiangling, Wu Fei, Gao Zhongmin, He Yuanzhe, Tong Xiaohuan, Zhou Hao, Liu Jinbiao, Zhang Zongxi, Lyu Yinglei and Xu Bo.
The patent application number is CN20241066..