... to the cold processing. (2)ultrasonic quilting machine of mattress bed cover Product Features 1.Short welding time,ultrasonic ... more smooth and stable. (3)ultrasonic quilting machine of mattress bed cover Technical parameter Model NK-JM2012Frequency 15KHZ,Output ... cosmetic bags, suit cover, bed cabinet, sauna kits cover, shoes , PVC pool bottom, etc.. (5)ultrasonic quilting machine of mattress bed ...