Exporters of high-kvalitet oil-type power transformers know the advantages of oil-immersed transformers, such as low cost and adaptability to harsh outdoor environments. But the high kvalitet power transformer exporter also has the disadvantage of leakage and fire problems, can not be installed directly in the distribution room. Therefore, oil type power transformer has its own advantages and disadvantages, high-quality oil type of power transformer exporters can improve according to the product defects, to improve these shortcomings, to further enhance the quality of oil transformer