1. Compatible with Xiaomi air purifier 1 & air purifier 2 & air purifier pro.
2. Organic metal antibacterial coating kill bacteria and prevent secondary infection.
3. Active carbon filter strong absorbing ability and purifying capacity.
4. Easy to apply it to your Xiaomi air purifier 1 & air purifier 2 & air purifier pro. Please note that youd better to replace it twice a year.