... designs for edges and good side treatment Ultrasonic Lace Sewing Machine:Working power220±5V 50Hz-60HzMaximum power1500 WOutput frequency20KHzPattern mould50mm & ... polyester, non-woven fabrics and chemical fiber fabrics, non-thread seam, edge-cutting and auto trim.Applications 3. Adapting to cut ... polyester, non-woven fabrics and chemical fiber fabrics, non-thread seam, edge-cutting and auto trim.