... hollow Basic configuration1. The new computer intelligent ultrasonic generator;2. 20 KHz ultrasonic transducer device;3. The mould for ... 3. To be automatic after frequency system and the ultrasonic soft start technology ofapplication, make the machine performance ... , curtain,bedspread, pillowcase, bedding bag, tents, raincoat, disposable surgical garment cap, non-woven mask, nonwoven, etc