1. Upper differential feed is driven by an independent stepping motor. The upperdifferential feed length can be adjusted to flexibly switch between synchronousand differential modes, delivering even pleating while preventing misalignmentfor smoother sewing results.

2. Front-mounted differential connected with mechanical linkages (Patented product).

3. Up to 15 programmable segments available for electronic upper differential.

4. Stepping-motor-controlled lower differential feed ratio.

5. One-touch switch between manual and automatic modes.

6. Rear-mounted linkage for lower differential adjustment, enabling easier maintenance and adjustment.

7. Electronic back-tacking, electronic thread-tension clamping, automatic thread-trimming and built-in presser-foot lifting.

Suitable for hemming hems, attaching zippers and pressing plackets for shirts,fashion garments and women' s wear; seam joining, hemming hems and pressingstop-stitching for down jackets and cotton-padded coats, etc.