Construction
| Tue 16 Dec 2025
Beijing, Dec. 16 -- State Intellectual Property Office of China has awarded a patent to Tiefa Coal Ind Group Co Ltd Dalong Mine for Lever Loading Device. Sun Jian, Tian Lizhi, Li Donglai, Wang Chong, Shu Shi, Zhang Shuaichi, Wang Qinghai, Lin Hongtao, Zhang Rongku and Kim Myung-gyu developed the invention.
The patent applicat..