zhejiang maqi sewing machine co., ltd.-pg电子模拟器网站入口

through a deep analysis and research on the relationship between machine needle work and thread tension change affecting stitch, the balance of time thread swing and the thread quantity , and the result and affect of the material or shap of each spare part make on stitch, not only can adapt wide quality (thread end), can also smoothly sewing medium fabric even for very thin fabric, a new type machine with the new structure of crossing time significance