... masks, etc) Ultrasonic lace sewing machine uses the newest ultrasonic technology, is widely used to original ... structure, reliable and convenient operation.II, The suitable materials of ultrasonic Lace Sewing Machine ... , Nylon, needlework cloth, non-woven fabrics, T\R cloth, Tetoron cloth(Polyester cloth),multilayer cloth ... fog and spark in produce processing, won’t cause damage to fabric edge, and also ...