? Dow RO membrane Dow Dow ro ro membrane film Dow Dow film reverse osmosis membrane [Product Parameter name ???? said: Dow membrane product ???? Brand: DOW / Dow regulation ???? grid: 50G, 75G, 100G fine ???? degree: 0.0001 micron desalting rate:?? more than 99 percent of Nissan Water: 50 gallons (189 liters), 75 gallons (280 liters), 100 gallons (370 l) replacement cycle: Depending on local water quality and water availability (about 1-3 years) efficacy: effective isolation of impurities such as water, heat, filter viruses, bacteria, toxins, chemical compounds, heavy metals (arsenic, cobalt, cadmium, mercury, etc.) toxic substances, metals, salts, ions travel substances harmful to human health, the removal rate of more than 99 percent, the United States imported materials.