ZLC two-stage multi-function vacuum oil purifier This machine is widely used in almost industries such as power plants, power stations, power companies, metallurgy, petrifaction, machinery, traffic, railways etc. Especially   be used for on site transformer overhauling with 110 KV or over, and remove poisonous gases drastically such as firedamp from new oil or imported oil. It's equipped with one special device for additives, which is easy to operate; the additive put into the device is innocuous. The process of depolarization is a physical process and do not destroys the oil quality. The oil after treatment will be up to international standard.