RO water system, RO water Filter, Automatic RO Membrance, Force Pretreatment Backflush, 98% Desalting Rate. RO water filter, RO water system, RO water purifier:Key Specifications/Special Features for EW-RO-450AL/H RO water filterRating output ... backflushApplication: factory, hotel, unit, the group places, and more EW-RO-450AL/H RO water filter for industrial use