I am selling my BLUEAIR 203 Slim air purifier (bought in January this year) Excellent state. It's really nice and effective. Silent. I just changed the filter (HEPA grade, the best) so it's good to go for an extra 5 months or so. Filters cost around 350 rmb in stores and can be delivered for free from the CBD Totana store. There is a digital days count meter that I give away for free and that tells you when you should change the filter. The air purifier is good for bedrooms or living rooms of up to 22 m2 (that's a big bedroom). Original price was 2,980 Rmb (I bought it 3200 from Torana so there's a warranty). I am selling it 1,900 Rmb. And there is a 3 year warranty.