4-stage filters

Description of 4-stage water filter set (Vietnamese or Taiwanese): First stage: Cotton candle made of polyethylene material that filters up to 5 microns and removes solid materials such as sand and clay Second stage: Activated carbon stage that helps remove unwanted substances like chlorine and dissolved gases Third stage: Solid carbon stage that removes remaining impurities before entering the salt treatment stage Fourth stage: Reverse osmosis (RO) stage that helps reduce excess salts in the water and increases the removal of salts and heavy metals