Security & Protection
| Wed 03 Dec 2025
Beijing, Dec. 4 -- Liaoning Transp Reserch Institute Co Ltd has received a patent for Simple Structure Displacement Sensing and Alarming Device. This invention was developed by Zhang Guanhua, Li Wenquan, Liu Xin, Wang Chao, Wang Chao, Wang Dedao, Cui Kaihua, Ma Yuting, Cui Ming and Men Guangxin.
The patent application number ..