Can hydraulic oil filters change color after filtration?
Can not pull, and now even foreign countries have not yet done this, I heard that there are such technologies, but the cost will increase several times? And it can't completely remove color
Can only become shallow, because part of the color is suspended particles, impurities caused by some of the high temperature oxidation, chemical properties change, filtration is physical, how can I do?!
We asked to call the past, they say that in addition to any other color, the new oil index can reach, Katoo foreign ah, Pall filter oil machine and so on have not heard what "bleaching" regeneration of waste oil of this road is very difficult, even if the landlord.
