Features:
1. It can set the ruffling density for two layers on the screen, it realized the standardization of ruffling density when the two layers material are stitched together, the upper and lower layers can be ruffled at the same time or the upper and lower layers can be ruffled separately, so that achieve the standardization of ruffling density.
2. When processing non-padded interiors, the abutted seam sewing and wrinkle operations can be completed in one step.
3. The functions of auto back tacking, pneumatic presser foot lifting, adjusting instantaneously internal and external presser foot alternating amount make the daily sewing easier and more efficient.
