Security & Protection
| Mon 17 Aug 2026
Beijing, Aug. 17 -- State Intellectual Property Office of China has awarded a patent to CHN Energy Group Ningxia Coal Industry and Shanxi Tiandi Coal Mining Machinery Co Ltd for Retractable Protective Equipment. Tian Jianchuan, Guo Wenxiao, Zheng Yuepeng, Jiang Lingyan, Liu Xuemeng, Jiao Hongzhang, Zhang Ming, Liu Lei, Yang Xi, ..