Hello Beijingers,
I'm selling my fantastic Blueair 503 air purifier in mint condition.
Blueair is a Swedish company and probably the best brand in terms of air purifiers. This model is one of their top class models, ideal for apartments up to 56sqm, with a powerful and quite silent purifying system.
Original price is 6860rmb and I'm asking only 4000rmb for a purifier in brand new condition with roughly one year and a half use. I still have the date stamps and manuals.