substations and transformers business in the future development of technological progress will take the road. The traditional old products despite the market, there is production, but the profit margins have been very small, it is impossible to form a strong competitive edge, the transformer main profit point is a new generation of high-end products, passive integration technology, the rapid rise of micro- Machine products, a comprehensive upgrade for the transformer to provide a leap-forward development of the technology entry point. In recent years, the development of 10kva transformer frontier, such as power ferrite materials, soft magnetic alloy materials, amorphous crystalline magnetic materials, nano-alloy magnetic materials, piezoelectric ceramics, nano-insulating materials have achieved fruitful development, which for the electronic transformer The industry technological progress has created good conditions, the electronic transformer will miniaturization with the needs of the whole, to the high-frequency, low loss, chip-oriented direction.