Rongtech Industry (Shanghai) Inc., is located in Shanghai, a city famous for its economic prosperity, convenient traffic and elites gathering together here, are specialized from 2001 in manufacturing and exporting Current Sensor, Voltage Sensor, IGBT & MOSFET modules,busbar products,Ultrasonic sensor and pressure sensors;we can offer you international certificates for most of our products, eg. GS, CE, UL etc.