... Sewing Machines Ultrasonic fabric Sewing Machine Ultrasonic Sewing MachineTechnical Parameter:Functions:Trimming: Straight or curvilinear ... the various patterns of holes,and treatment of side melting;Slitting: Single or more cutting of the material at the same ... artificial leather and fabric,nonwoven fabric, spun-bonded cotton,thermoplastic film, chemical plastic piece. Such as nylon, polyster,ABC,PC ...