... include multi-layer bed filter, softener or anti-incrustant dosing station and ultra-filter. The completed pre- ... include floculant dosing station, multi-layer bed filter, active carbon filter, softener or anti-incrustant dosing station, heat ... exchanger, ultra-filter and PH value adjusting equipment. The assistant ... , SAT, DQ, IQ, OQ, PQ ect. RO water purifier