... sewing machineSpecifications:ultrasonic sewing machine apply to seal the fabric without thread replacing the needles Sewing designs can be ... one time.Suitable material:All kinds of artificial leather and fabric, nonwoven fabric, spun-bonded cotton, thermoplastic film, chemical plastic piece. ... such as nylon, polyster, PC, PU, PE, PP, PS, etc.Application:Apply to lace clothing, ribbon,trim,Filter ...