Security & Protection
| Sun 07 Dec 2025
Beijing, Dec. 8 -- Chinese Patent for Wireless Talkback Intelligent Safety Helmet has been issued to Zhaotong Power Supply Bureau of Yunnan Power Grid. This invention was developed by Ouyang Tingnan, Wang Huilin, Lan Xingwei, Hou Kang, Liu Chengfei, Huang Lei, Zhang Xiaozu, Wan Yucong, Hu Tianyu, Luo Xianyao, Guan Shijiang, Lyu ..