How does the Xiaomi Smart Evaporative Humidifier sterilize and prevent mildew?

For your reference, the Xiaomi Smart Evaporative Humidifier has several sterilization methods below:
1. By the antibacterial coating on the filter element;
2. By the silver ion components in the water tank.
The anti-mildew method is listed below:
The coating of the filter element can effectively prevent mildew. At the same time, the filter element adopts a suspended design. After the humidifier stops humidification, it will automatically dry, reducing the problem of mildew caused by the filter element being soaked in water for a long time.