Tools and Machinery
| Thu 04 Dec 2025
Beijing, Dec. 4 -- State Intellectual Property Office of China has awarded a patent to CNOOC China Co Ltd Hainan Branch for Personnel Lifting Device. Li Zhi, Sun Yinghong, Sun Zan, Ning Gaoming, Li Ruijian, Wu Wei, Li Jingsong, Zeng Qingjun, Liao Hong, Zhu Guiping, Zhang Lei, Sun Hongjian, Lin Fei and Zhang Bao developed the inv..