... matirial: manmade cotton, non-woven fabrics, chemical fiber fabrics, silk, and other flat pieces of flexible materials. Applications:Mattress, Bed sheet ... , snow jacket, Car seat cover … Specifications:1, power: 380V,50HZ2, Ultrasonic generator power: 800Wx (6-20 sets)3, Working frequency: 20KHZ4,Quilting ... U-18)9, weight: 2.4T10,Pattern: Pattern roll length and diameter according to user requirements