Tools and Machinery
| Tue 26 May 2026
Beijing, May 26 -- Shanghai Foundation Engineering Group has submitted a patent application for Rotary Spraying Device, Rotary Drilling Rig and Method for Cleaning Drill Bit. Zhang Zhi, Liu Bao, Chen Ming, Gao Shiyuan, Wan Yi, He Xingchen, Huang Lei, Shang Yuxi, Li Zhiwei, Guo Chen, Huang Fuyong, Chen Yigui, Qin Jian and Yi Yany..