Retail & Household
| Wed 15 Apr 2026
Beijing, April 15 -- Dengfeng Songji New Material Tech Co Ltd has obtained a patent for regulating device for gate valve at bottom of warehouse. This invention was developed by Qu Songjie, Liu Haifeng, Li Jiantao, Liu Xiaohui, Zhao Jianbin, Wang Dongfei, Wang Haomin, Wang Suna, Hou Huimin, Sun Zhanfeng, Qu Shijia, Cao Qiaoli, Ti..