... needle No thread, High speed quilting machine Ultrasonic Quilting Machine Characteristics:BST-U ultrasonic quilting machines using the latest technology for ... patterns by changing pattern rolls.Compared with traditional quilting machine, it features simple operation, easy maintenance, high ... generator power: 800Wx (6-20 sets)3, Working frequency: 20KHZ4,Quilting speed: 50-1200m/h5, continuous working ...