Tools and Machinery
| Sun 25 Oct 2026
Beijing, Oct. 24 -- CSSC Chongqing Equipment Tech Co Ltd has obtained a patent for large spindle double key groove machining device. This invention was developed by Deng Hao, Zhang Jianyun, Chen Hualu, Hu Xuan, Yuan Xiaoping, Zhao Jukun, He Xiaorong, Wu Jiang and Liu Feng.
The patent application number is CN202520306824U 2025..