Transportation
| Tue 27 Oct 2026
Beijing, Oct. 26 -- Yankuang Energy Group has secured a patent on Auxiliary Device for Closing Lower Side Door of Railway Open Wagon. Cheng Gang, Yan Zhiwei, Yu Qingjun, Guo Fei, Lou Xiangdong, Xie Shaoqin, Wang Bin, Gong Yeming, Dong Bo, Wang Xingwen and Du Weibo developed the invention.
The patent application number is CN2025..