Electrical equipment operation monitor and malfunction diagnose had become the new subject of power industry. Xi'an Sifang takes more than ten years efforts to research the multi-series high intelligent cable malfunction detector, intelligent ultra-low frequency voltage withstand test equipment and on-line supervision system for power equipment to the market which win the high praise from customers. We have capacity to conduct development, research and production of various new monitor and diagnose products for power equipment. Sifang People will take the broad, generous and confidence attitude and the management concept to be one of best for high speed development.