ZYD is special for treating the used and old transformer oil, mutual oil, switch oil. 1-high vacuum 2-SGS, CE qualifying 3-Ultimate vacuum 5Pa 4-Apply to insulation oil, turbine oil, hydraulic oil, etc. 1-To increase and maintain the oil's dielectric strength, i.e. Breakdown voltage; 2- To dehydrate of free and soluble water, free and dissolved air and gases; 3-To filtrate out particles, impurities and other dirties in the oil; 4-Vacuum drying the transformer and vacuum filling transformer[...]