Aerospace
| Sat 10 Oct 2026
Beijing, Oct. 10 -- Shanxi Jindi Coal Coke Co Ltd Chiyu Coal Mine has obtained a patent for return airway waste rock blocking support. This invention was developed by Ren Liwu, Huang Kai, Liu Haibo, Yang Hu, Sun Quanliang, Zhao Dongsheng and Li Yanan.
The patent application number is CN202520398977U 20250308. The patent publi..