... original. EF series hydraulic air filter1. Wide range of supply for filter, filter element and other combined filtration equipments2. Compltely interchangeable ... and 3A standards, quality comply with GMP requirement.5. Imported filtration materialsOur product mainly interchangeable with following brandPALL, HYDAC, MAHLE, ... TAMROCK, SAUER-DANFOSS, PERKINS, JP-HBYB, LINDE EF series hydraulic air filter