... smooth and stable. (3)ultrasonic quilting machine of mattress bed cover Technical parameter Model NK-JM2012Frequency 15KHZ,Output ... 8-20M/MINWeight 6800KG (4)ultrasonic quilting machine of mattress bed coverApplied range Car tarpaulin, Car seat covers, luggage ... , footwear shoes, clothing coat, children jacket, pillow, quilt, mattress bed cover, cushion pillow, table mats table cloth, curtain shower ...