Steel
| Thu 22 Oct 2026
Beijing, Oct. 22 -- Hebei Construction Group has obtained a patent for steel structure step for stepped conference room. This invention was developed by Zhang Lianwei, Ning Huimei, Liu Yuanhua, Hu Shaobo, Hu Pengle, Li Shuo, Dong Yanzheng, Wang Jianfeng, Dong Xuebing, Jin Xin, Gao Yumei, Wei Tian, Xie Yalun, Wang Xiaoli, Chi Shi..