Security & Protection
| Tue 24 Mar 2026
Beijing, March 25 -- Qingdao Zhengrong Shangpin Automation Co Ltd has sought patent for Automatic Production Final Assembly of Kongming Lock. This invention was developed by Zhang Youfu, Li Chao, Du Junlei, Yang Bo, Jia Yulin, Zhang Liangyu, Wang Wenwu, Xiao Kangning, Liu Zhongbao, Dong Yang and Liu Wentao.
The patent applica..