... 2. PLC programmed control systems and human-computer interface for adjusting welding parameters.3.The machine frame is weld with ... where appropriate, withStep in the process, save time.(6) suitable for very large plastic welding.Principle of Ultrasonic Plastic Welders: Ultrasonic ... disk, U disk, SD card, CF card, USB connectors,Bluetooth.Toys,stationery: folder, album, folding boxes,PP hollow board,pen ...