Series Resonance, Hipot Tester, High Voltage Test Equipment manufacturer / supplier in China, offering Electrical Instruments Micro Ohm Low Resistance Tester 5-30A AC Current, 4-Wire Method AC Grounding Digital Portable Milliohmmeter Low Value Resistance Tester, Quality Assurance 12V AC Output Voltage Low Resistance Tester 0-200mΩ for Industrial and so on.