... edge, Welding,cutting,lace embossing,bronzing,binding,etc, ultrasonic lace sewing machine 1. Features:1) Adopt the Japan piezoelectricity CMOs chip, ... stable output. 2) Special alloy steel material is used to make the knurl ... ) Continue to work,and not need to pre-heat. 2. Function Welding,cutting,lace embossing,bronzing,binding,itemizing and etc ...