rate: 100Performance is unknown, but look forward to it.
Delivery received very quickly. This is a new type of air purifier, so I doubt it will work. I'm not sure what the principle is, but I'm curious how it will perform. I can't figure it out yet. And the seller has his own sense of enlightening letter and card case gift sense in the envelope, thank you for your purchase and continue to use. And I don't know if it's an additional giveaway, but it also contains formaldehyde measurement and detection reagents. I don't know how it works, but I think the seller's service is very good.Aug 27, 2019