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