Metal & Mining
| Sun 18 Jan 2026
Beijing, Jan. 19 -- TZ Coal Machinery Co Ltd has sought patent for External Traction Device of Ultra-thin Seam Coal Mining Machine. This invention was developed by Jiang Fei, Li Xiaopeng, Wang Ruiming, Duan Xiao, Li Xiaozhe, Zhang Zhenzhong, Yao Xiaokai, Zhang Shizong, Zhou Yongpeng, Li Yang, Zhang Yi, Jia Tiejun and Wang Yigang..