RO membranes have small pores that will remove almost all particulates, including those salutary ones. What’s more, the RO-purified water tastes flat. That’s why Aibote unveils two 5-stage RO water filter systems with remineralization that can add minerals and improve the taste. One water filter system has two filter cartridges, namely PCT and RO, and the other has three filter cartridges, namely PRC, RO and T33. Remineralization can be achieved by installing post carbon blocks. The filter is integrated into a PCT cartridge in 4-stage water filter systems. In contrast, in 5-stage water filter systems, remineralization is achieved by T33 filters that function independently. The filters can add multiple minerals into the water, like calcium, magnesium, ferrum, zinc, selenium and strontium.