Rubber
| Thu 19 Feb 2026
Beijing, Feb. 20 -- Taizhou Oufeng Machinery Co Ltd has filed a patent application for Sewing Machine Shaft Sleeve Anti-falling and Multi-stage Elastic Clamping Limiting Device. This invention was developed by Zhang Youfu, Yang Jie, Ruan Jianjun, Hu Zhijun, Zhang Qimin, Ruan Jiaqi, Xu Ruoshui, Xu Weizhen and Ye Shuijin.
The p..