1.Filtering precision:0. 1 micron .2.Oil contained in compressed is below 3ppm.3.Filtration efficiency:99.99%.4.Service life is approximately 5000h-8000h.5.Initial pressure differential less than 0.02mpa. 6.Filter element of air oil separator is made by the thin fiberglass, which imported from germany hv company.7. Structure: the outer is metal nets, inside is high densite fiber glass and gas separation material, most inside is the metal nets, flange connection with sealing ring.