... LED color screen control system: show multiple states, water shortage, water overflow, making water, flushing, the system operating states are absolutely clear ... is full.4. Can produce 2 kinds of water quality: Pure water (RO water), Ultrapure water (even to 18.25 MΩ· cm); can ... to add UV/UF components.9. All pipes, joints, water storage tank the system adopts are certified by NSF (USA National ...