vacuum oil purifier for lubricating oil, turbine oil, insulating oil, fire resistant oil, transformer oil, switch oil, anti-rub hydralic oil, hydraulic oil, refrigerating oil, heat transfer oil, compressor oil, etc and oil filling machine, oil dispenser, oil filter, oil water separator, etc in electrical power field, metallurgy, coal mine, normal substation, power transmission and distribution circle, cement factory, shipping, railway, etc different field.