... include multi-layer bed filter, softener or anti-incrustant dosing station and ultra-filter. The completed pre-treatment ... multi-layer bed filter, active carbon filter, softener or anti-incrustant dosing station, heat exchanger, ultra-filter and PH value ... and +GF+ instruments etc.Documentation verification: We provide the whole set documentations: FAT, SAT, DQ, IQ, OQ, PQ ect. RO water purifier ...