... 3.Li battery power Advanced Portable Ultrasonic Flaw DetectorIntroduction: The ultrasonic flaw detector is the portable industrial non-destructive flaw detector, which can rapidly, easily and accurately ... ,60,70,80,90, 100,150,200, 250, 300, 350, 400,450,500,600,700,800,900,1000,2000,3000,4000 ...