Tools and Machinery
| Wed 14 Jan 2026
Beijing, Jan. 14 -- Shandong YuanQuan Machinery has submitted a patent application for Square Tube Punching Die. Wang Xuewen, Huang Lei, Zhang Qiang, Yuan Jiaying, Hu Faliang, Wang Jing, Han Lichao, Liu Zhenmei, Zhang Yushan and Li Jingdong developed the invention.
The patent application number is CN202510611777 20250513. The p..