... RO Membrance, Force Pretreatment Backflush, 98% Desalting Rate. RO water filter, RO water system, RO water purifier:Key Specifications/Special Features ... membrane: ESPA4040 3 piecesPump: CDL2-180/2.2kW, 1 piecePre-filter: Φ300 x 1650, 2 piecesPositive ion container: Φ300 x 1650 ... group places, and more EW-RO-450AL/H RO water filter for industrial use