★ Manufacturing reactive oxygen: negative oxygen ions can effectively activate the oxygen molecules in the air, making it more active and more easily absorbed by the human body to effectively prevent "air-conditioning disease".★ Clean air, smoke prevention and dust control: negatively charged anions and floated in the air neutralize positively charged electrode for smoke dust, to be natural sediments. ★ Negative ion air purification function effectively get rid of the car. indoor dust in the air. smoke and relieve motion sickness symptoms and clear the air!