I have beenusing air purifier for yearsin Beijing, China. So far so good except the only problem troubles me, is that effective? is my PM2.5 or PM10 reduced? the answer is probably obvious, but how effectively is it? Nobody knows.At the morment, Dylos is the only manufacturer that provides consumer level product with accurate air quality index, so, not many choice. I got aDylos air quality counterfrom Amazon, there are many products, if you want to export the index data from the black box into your desktop for later process , you'll need at least a DC 1100 pro with PC interface or higher versi
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