Over the years, the company has made outstanding contributions to the modernization of China's power industry and light industrial machinery. The NCBYQ-Ⅱ automatic regulating transformer developed by the company in the early stage has attracted great attention from the casting door of the power supply department. The planned low-voltage distribution transformer will be another major technological change in the history of power supply, which will solve the technical problems of low-voltage distribution in rural areas for many years. To achieve the transformer utilization rate of large, small loss of energy saving target. With the acceleration of the construction of small towns, the process of rural electrification is also accelerating. In 1949, China's rural electricity consumption was only 20 million kilowatt-hours per year, accounting for 0.58% of the country's annual electricity consumption. In recent years, county-level power supply enterprises in the power supply areas of the power grid companies have sold nearly 800 billion kilowatt-hours of electricity, accounting for 51% of the company's total electricity sales. Rural areas and small towns play an important role in the application of electric power in China. However, as the load of precision casting production users varies greatly, electricity consumption is large in the busy season, and each household only uses electricity for 1~2 hours a day in the slack season. "A steep drop in load on a high-speed or small car is a huge waste of electricity. Therefore, to do a good job in rural and small towns low-voltage distribution transformation is the top priority of China's "energy conservation and emission reduction". The low-voltage power distribution and energy saving transformers designed and developed by our company for rural, community and street lamps are developed for the continuous improvement of the living standard of urban and rural people, the rapid changes in the electricity consumption of rural users, and the failure of some power distribution transformers to meet the needs of load growth and the serious power loss.