230KV power transformers are widely used in the main power grid of the State grid. Combined with the successful traditional technology at home and abroad and the company's years of experience in transformer production on the basis of careful design, manufacturing continuous improvement of new products. The oil-immersed self-cooled transformer has the characteristics of reliable structure, low loss, low noise and superior performance. Vegetable oil transformers with high environmental protection requirements are mostly suitable for European and American countries.