ultrasonic shop bag sealing machine applys to packaging materials,telephone sets, ect weld width from 1mm to 200mm ... machine1.is mainly applied to packaging materials ,telephone sets ,knitted products ,sportswear, Peng machine bag, bedsets, clothing, masks, lace , ... Christmas ornaments and other products2. ultrasonic lace stitching machine is available in straight line, curve,edge, welding and ...