Use for:Extremely inferior super HV transformer oil and insulation oi. Technical special: High vacuum range and recover oil 1.It incorporates the advantages of ZY,ZYB,ZYD and BZ. 2.Latest decolorant is selected which ensure dark colored oil to resume the color of new oil..Oxidant filling device is equipped,extending the oil lifetime 15 times longer. 3.Super fine filtration,reaching above NAS4. 4.Advanced PLC microcomputer auto control. 5.3 times filtration could enhance voltage to 75KV or above. 6.Flexible and easy dismantlement.