Steel
| Fri 04 Oct 2024
Beijing, Oct. 5 -- Hangzhou Dongsheng Construction Eng has been granted a patent for door head steel frame structure. This invention was developed by Yang Dawei, Jia Junjun, Tao Zhefeng, Kong Lingbo, Shen Jianghui, Yu Kai, Lin Wangjian, Shi Yanqiu, Qu Fengjie, Han Min, Lu Chang, Lin Weijia and Jiang Li.
The patent application..