Medical
| Mon 30 Mar 2026
Beijing, March 30 -- Huaneng Coal Tech Research Co Ltd and Ccteg Shenyang Research Institute have submitted a patent application for Backpack Type Respiratory Protection System. This invention was developed by Li Lei, Pan Bo, Li Yichao, Liu Yang, Lee Young-won, Sun Fulong, Jiao Yang, Sha Xingfeng, Liu Hao, Zhao Haibo, Li Tianxia..