Enviornmental
| Fri 30 Oct 2026
Beijing, Oct. 29 -- Beijing General Municipal Engineering Design & Research Institute has secured a patent on Self-cleaning Water Supply System. Jiang Lili, Han Weiqiang, Rao Lei, Luo Ding, Yang Jingwei, Qu Meng, Wang Shaolun, Han Baoping, Xue Guangjin, Yao Zuogang, Bao Lei, Guo Dong, Wang Yang, Song Yage, Li Zhangqing, Yang Li,..