... and stable performance 3.Simple operation and convenient Specification :Ultrasonic system composition, by ultrasonic generator, converter, a combination of mouldFrequency: ... Machines, Plastic Bag Making Machine, Bag Making Machine of Paste Bone, Stationery, Plastic Welding Machine, Machinery, Automation Equipment, etc.Ultrasonic ... ,Mask, Paper Cup, etc. Continuous Ultrasonic Non-woven Sealing System