Security & Protection
| Thu 05 Feb 2026
Beijing, Feb. 6 -- Jiaozuo Power Supply of State Grid Henan Electric Power has sought patent for Lock Nut and Locking Method Thereof. This invention was developed by Liu Tao, Wang Quande, Ma Hongxing, Long Jie, Yang Guiying, Yan Linfeng, Huo Yanyan, Yu Feng, Zhang Yonghui, Chen Hui, Chai Tianfu, Yin Chenghao, Wang Lijun, Liu Che..