... -JM2012(1)ultrasonic quilting machine of mattress bed coverThe principle of operation Using high-frequency vibration wave propagation to ... and stable. (3)ultrasonic quilting machine of mattress bed cover Technical parameter Model NK-JM2012Frequency 15KHZ,Output power ... shoes, clothing coat, children jacket, pillow, quilt, mattress bed cover, cushion pillow, table mats table cloth, curtain shower ...