Series Resonance, Hipot Tester, High Voltage Test Equipment manufacturer / supplier in China, offering 0-50KΩ Shielding Clothing Surface Resistance Test Device Shielding Clothing Low Resistance Tester, Portable Multi Measuring Current Professional Transformer/CT/PT/Vt Testing DC Winding Resistance Meter, Electrical Test Instrument Customized 20A Transformer Winding DC Resistance Tester 100μ Ω ~20Ω Suppliers and so on.