In recent years, the S11-M-80 10KV Oil-Immersed Power Transformer has attracted much attention in the global market. With the continuous growth of global electricity demand, this type of transformer, with its advantages of high efficiency, stability and energy conservation, is widely used in urban power grid renovation, industrial production and other fields. In developing countries, the acceleration of infrastructure construction brings them huge market space. In developed countries, the high requirements for the reliability of power systems have also contributed to the continuous expansion of their market share. Many transformer manufacturing enterprises have been increasing their investment in research and development and production in this field to meet the growing demand of the global market. It is expected that their prospects in the global market will be even broader in the future.