... nonwoven fabric welding,forming,sealing,seaming,bonding,etc. Product Description :( spot welding machine )Ultrasonic welding machine/ equipment, ... over load protection will take effect 4. Equipped with PHILIPS tube, to ensure ultrasonic output power as required 5 ... aluminium mould model. 7. MOS-FEE high tech electronic components for replacement of conventional electric crystal drive circuit, which ...