1. PREFESSIONAL MANUFACTURE FOR FILTER 2. ISO CERTIFICATE 3.EXPORT TO US, EUROPEAN MARKET . Filter installed in ... hydraulic chemical change which produced by the hydraulic oil mixed with resin and asphaltenes, carbon residue quality. Thereby it can ... , β5, β10, β20 ≥ 200, ≥ 99.5% filtration efficiency η.Working medium: hydraulic oil, phosphate ester hydraulic oil, emulsion, water - ethylene glycolFlow ...