The operation power of railway, subway and rail transit, transportation hub, expressway, port, port, airport, water treatment, waste treatment and other infrastructure mainly comes from electric energy. The safety, stability and efficiency of the operation of these power supply and distribution facilities are the most important characteristics of these facilities. The actual measurement of HENGFENGYOU TRANSFORMER products is superior to IEC standards, with low loss, low noise, maintenance free, long-term and efficient operation. The normal service life can reach more than 30 years, which can fully meet the power distribution needs of basic equipment.