Complete set of filters for Purina compact refrigerator

Description of the stages:

PP to remove sediment, dirt, sand, rust and other impurities.
CTO to remove chlorine, pesticides and herbicides.
RO (membrane) is a reverse osmosis unit R.O. It is a unit known as a membrane and contains very narrow micropores of up to 0.0001 microns and depends on the property of osmosis and removal of salts and heavy metals, starting from 96% called mechanical expulsion that does not use any chemicals.
T33 A carbon filter made of coconut and works to compensate for acidity and remove any smell or taste.

Filter industry:

High quality Chinese manufacture