Metal & Mining
| Mon 16 Feb 2026
Beijing, Feb. 16 -- Shougang Luannan Macheng Mining Ind Co Ltd has sought patent for Mine Shaft Lifting System and Mine Shaft. This invention was developed by Zhang Haifeng, Yuan Wei, Yuan Zhen, Zhang Xin, Zhao Xuguang, Ge Lei, Liu Zhizhong, Zhang Zhiyong, Zhang Yulong, Huang Lianfu, Ding Jianwei and Guo Yin.
The patent appli..