cause of leaving, we are selling our Torana air purificator. We bought in december 2013 and it changed our life and the air quality in our living room and bedroom since. The model is 303 and it's suitable for a room of 40m2 and less. You have 3 speeds and you need to change filter every 6 month but depends how long you will use it every day. So, the model is : Blueair 303 HEPASilent Air Purification System + 1 filter inside + 1 new filter. Buying price : 4 580 RMB + 428 RMB filter Selling price : 3200 RMB with on filter inside (3month left) and one new filter. You can have a look on the website : http://www.toranacleanair.com/AirCleanerModels.html We are leaving at the end of august, but if you need it now it's not a problem. We live near Beixinqiao subway station. Also, Torana is delivering you filter in front of your door. I can send you biggest picture by mail.