Construction
| Fri 25 Sep 2026
Beijing, Sept. 25 -- China Construction Second Engineering Bureau has obtained a patent for passage channel for getting on and off roof. This invention was developed by Wang Ying, Huang Honglin, Chen Lei, Guan Shichao, Zhang Ming, Wang Pengfei, Xu Lu, Tan Yi, Xing Qiang, Liu Chengqi, Dai Guangxin and Fu Lin.
The patent applicat..