Meter for Electricity, Resistance Meter, Cable Tester manufacturer / supplier in China, offering JHCTA-1836 Portable AC 0~1000va Multi-Functional V-I Characteristics Ratio Polarity Testing CT PT Analyzer, Jhrc100p High-Stability Delta 10kv Tangent Tester Dielectric Loss Calibrator, JHSCI001 Low-Voltage Power Supply Transformer Short Circuit Impedance Tester and so on.