Uses a feed presser foot and lower feed dog for compound feeding, with upper and lower feed amounts independently adjustable. 

Features synchronization and differential functions: the upper differential feed amount is adjusted by the plus and minus symbols on the control panel, and the feed can be set for synchronous or differential feeding as required, achieving low-tension sewing and suppressing wrinkling, seam misalignment, and other issues.

Dozens of interchangeable presser feet with different functions enable multi-purpose use in one machine and adapt to a variety of fabrics. Suitable for lace pleating, wedding dresses, curtains, home textiles, fashion, and other fields.