Series Resonance, Hipot Tester, High Voltage Test Equipment manufacturer / supplier in China, offering 50V 250V 500V 1kv 2.5kv 5kv Megohmmeter Insulation Resistance Testers, Three-Phase Frequency Multiplier Power Generator for Multiple Triple Frequency Induced Overvoltage Withstand Voltage Test, 150Hz Multiple Frequency Induction Withstand Voltage Induced Withstand Voltage Test Device and so on.