Automobile
| Tue 27 Jan 2026
Beijing, Jan. 27 -- Shijiazhuang Coal Mining Mach has submitted a patent application for Transmission Structure, Gearbox and Drilling Machine. Zhu Yuqiang, Wang Yanhai, Li Wenzhi, Li Zhihong, Cui Zhiqi, Liu Xian, Liu Weihang, Zheng Yumin, Zhai Xueguang, Wan Hongfeng and Zhang Yinzhong developed the invention.
The patent appli..