... has a stable quality.20KHz Ultrasonic plastic welding machine:1, automatic tracking frequency functions. 2. failure ... original German (PINOT) automatic constant amplitude9. the complete machine adopts fittings: original imported Germany (PINOT) transducer, battery ... valve (Germany FESTO), header (Japanese SMC) program (OMRON), filters (SMC), PLC (Japan PANASONIC), man-machine interface (SIEMENS, Germany ...