Healthcare
| Tue 17 Sep 2024
Beijing, Sept. 18 -- Sichuan Chuanmei Shidonggou Coal Ind has secured a patent on anti-falling dumbbell pin and scraper conveyor with anti-falling dumbbell pin. Liu Huajun, Zou Yong, Hu Xiaojun, Yang Qijun, Wang Weiping, Feng Wei, Xiang Min, Yang Jianjun, Luo Hongbin, Chen Yutong, Xiao Ruxiang and He Xiangshun developed the inve..