MFD500 Portable Ultrasonic Flaw Detector adopted the international advanced IC technique and new-style color TFT LCD display. Each performance index of MFD 500 complies or even exceeds international standards. The instrument uses the artificial intelligence technology. With a lot of useful functions Defectoscope MFD500 can test, orient, evaluate and diagnose various flaws such as crack, lard, air hole in work piece's interior swiftly and accurately locate them without any destruction or damage to the sample. Instrument can be used in lab or on engineering site. Also, it can be widely used for safety checking and life evaluating in fields of aeronautics, rail transportation and boiler pressure vessel.