Enviornmental
| Thu 13 Aug 2026
Beijing, Aug. 13 -- State Intellectual Property Office of China has awarded a patent to Yellow River Mingzhu Water Conservancy and Hydropower Construction for Manhole Cover Plate. Liu Yong, Li Xinbo, Bai Shujie, Zhang Zeyin, Zhao Shengbo, Zhang Minqiang, Zhang Tong, Jiang Xiaofeng, Zhao Dawei, Li Bin, Liang Bin, Zhang Junpeng, C..