Where is the healthy air？ where is the good PM2.5

How long you haven't seen the blue sky and what is the quality of the air you breath.
The blue sky really means the good quality PM2.5？good for healthy?
The particle counter will give you the direct answer of the air quality result.
It can got the PM2.5 and PM10 result only in 35 seconds. with also purification rate.


The article is provide from [Lanjia Water Ionizer], please indicate the source address
reprinted:  http://www.ionaircleaner.com/health_and_environment/2415.html