... .5m/3.0m/4.0m ..or design by your needs.6. it's safety, welding by heat & impulse with infrared control.7. welded ... welding time could be finished in 20 sec, and adjustable by your materials.9. High efficiency, good welding quality, succinct, easy operated ... .10. Touch screen control panel or button control panel by your choice.11. replace traditional sewing machine,improved the quality and ...