... ultrasonic compound machine, ultrasonic stitching machine, ultrasonic heat sealing machine, ultrasonic Velcro splitting machine, ultrasonic magic sticker slitting ... for instance, Nylon, needlework cloth, non-woven fabrics, T\R cloth, Tetoron cloth(Polyester cloth),multilayer cloth, and other coated fabric and ... special steel moulds for cutting and welding, the sealing edge won’t be crazed, won’t hurt ...