In the haze day, you can not seen each other in only 10 meters long.
With the particle counter you can check the air quality around you if the air good or not.
Laser particle counter use the imported laser sensor to check the air quality.
The accuracy is ±5%, and it is portable model easy carry.

The article is provide from [Lanjia Water Ionizer], please indicate the source address
reprinted: http://www.ionaircleaner.com/health_and_environment/2321.html
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