> Differential feeding needle distance is accurate, the upper roller, the lower rolleland the swing needle are driven by independent stepper motor, and the differential feeding of the upper and lower rollers can be set to achieve perfect sewing stitchcoincidence.
> Flat sewing machine with roller feed -specialist in automotive interiors.
> computerized needle distance adiustment completely solves the problem of inconsistent needle distance in each set of the old manual adiustment needle distance.