bonjour2

Deionization unit, just function as a tap water purifier , like what u use yr 4 stage RO unit for. Except that the purification here involve resins to remove organic in water, yr RO uses reverse osmosis mtd, carbon filter, sediment filter to do the process. No water wastage for DI unit, but alot of wastage for RO units .Catridge replacement for DI unit is cheaper than the TFC membrane in the RO unit.