Security & Protection
| Tue 04 Aug 2026
Beijing, Aug. 4 -- Changqing Eng Design Co Ltd and China National Petroleum have been granted a patent for Fire-fighting Cooling Water Supply Device. This invention was developed by Zha Guangping, Guo Zhiqiang, Fan Pengjun, Wang Guozhu, Bai Hongsheng, Wang Chao, Zhang Fan, Du Jie, Li Yanfang, Zhang Chao, Wang Yanbin, Wang Lina, ..