Oil & Gas
| Thu 20 Aug 2026
Beijing, Aug. 20 -- Xinjiang Yongsheng Juyuan Petroleum Machinery Co Ltd has been granted a patent for Pulley Block Hydraulic Pumping Unit. Wang Cong, Huang Yong, Ma Zhoujun, Li Dongxu, Xu Wenjian, Xiao Pan, Li Sibo, Yang Jiabin, Yang Changbao, Duan Meiyanxi, Sun Xining and Gao Sheng developed the invention.
The patent applic..