... smooth and stable.(3)ultrasonic quilting machine of mattress bed cover Technical parameterModel NK-JM2012Frequency 15KHZ,Output power ... -20M/MINWeight 6800KG(4)ultrasonic quilting machine of mattress bed coverApplied rangeCar tarpaulin, Car seat covers, luggage handbags, ... shoes, clothing coat, children jacket, pillow, quilt, mattress bed cover, cushion pillow, table mats table cloth, curtain shower ...