Vietnamese 7-stage device

"It is a home water desalination device consisting of seven stages and produces up to 350 liters per day: 1) A cotton filter that removes dust and impurities. 2) A carbon filter that removes taste, color, and odors such as chlorine. 3) An activated carbon filter that reinforces the initial purification stages and prevents fungal growth. 4) A salt-processing membrane with 1/1000 micron pores that adjusts salt levels and eliminates microscopic microbes. 5) A post-carbon filter that ensures clean and fresh water after storage. 6) A mineral activation filter that restores essential minerals lost during the initial filtration stages. 7) An alkaline filter that balances alkaline levels in the water and reduces acidity, helping the water support vital body functions such as regulating high blood pressure, improving circulation, enhancing the condition of skin, hair, and nails, balancing urine pH, and maintaining bladder health."