Engineering
| Sun 01 Feb 2026
Beijing, Feb. 2 -- State Intellectual Property Office of China has received CNOOC Energy Technology & Services patent application for Anchor in Hydraulic Drive Sleeve. Wang Honglu, Chen Yongfeng, Yu Youyang, Jiang Liang, Bu Honghao, Zhao Jinxu, Wei Jun, Xu Haitao, Wang Bingshuang, Han Lidong, Lu Chunlai, Sun Huiming, Bai Peng, L..