Steel
| Tue 22 Sep 2026
Beijing, Sept. 22 -- Heilongjiang Communications Polytechnic has been awarded a patent for Grinding Device of Medium-sized Steel Rail Grinding Wagon. This invention was developed by Zhang Fengzhi, Sun Qi, Liu Yong, Wang Jing, Liu Yang, Zhan Jiawei, Liu Guohang, Wang Shuai, Zhang Hao, Yan Jiaqi, You Zhuoxue, Feng Zitong, Wang Zhe..