The unit is divided into nano-type and ordinary type, which are customized and selected for different environments. The unit passes through physical filtration (G4 junior high-efficiency filter) catalytic module (decomposes organic matter), and the temperature rises 2 ℃ ~ 5 ℃. Well+ chemical treatment produces a large amount of negative ions to make the working environment full of oxygen, and every breath is fresh and healthy air. More activation of brain cells to keep energy high.