Industrial
| Fri 02 Jan 2026
Beijing, Jan. 3 -- Shandong Tianrui Heavy Industry has secured a patent on Sealing Structure for Hydraulic Rock Drill. Li Yongsheng, Sun Mingkai, Yang Qi, Liu Zhiwen, Chen Ru, Liu Zhiquan and Zhang Baoyan developed the invention.
The patent application number is CN20242392947U 20241216. The patent publication number is CN2233..