Construction
| Tue 14 Jul 2026
Beijing, July 15 -- Laizhou Ruihai Mining Co Ltd has submitted a patent application for Construction Expansion Joint Waterproof Structure of Constructional Engineering. This invention was developed by Lin Jian, Jiang Yihan, Wen Xiaodong, Wang Jian, Du Xiupu, Liu Lu, Li Ke, Qin Xiuhe, Yu Minghai, Wang Bingwei, Yu Zhaoqing, Dong G..