The machine can remove moisture, water, gas and particulate, etc. From oil at a high efficiency and improve pressure-resistance and quality of oil so as to ensure safe operation of electric power equipment. As well as decolorize used oil color to new oil color while keeping property & function of oil. It is mainly suitable for treatment of dissatisfactory transformer oil, cable oil, mutual inductor and switch oils in the electric power field and industrial and mining enterprises. Wooden case