0303 flat sewing machine for upper and lower feeding of medium and thick materials

● New design of chassis, low vibration, low noise

● New lubricating oil road design, the performance of the parts more optimized, long service life

●3 shaft sleeve feeding shaft, feeding cool, strong seam thickness performance

● Double pressure regulating mechanism of presser foot, good performance of thick seam and thin seam

● The locking device of the needle distance dial ensures that the trace length is not easily changed during the operation of backward stitching