How to convince customers buy air purifier by laser particle counter?

The reason people buy air purifier is because they are care about breathing health
Also know some about air pollution.
So our salesman have to convince customers, our air purifier working well.
Laser particle counter detect the air quality before and after using air purifier.
Before using air purifier, we may be see the air quality is pollution, after using air purifier, the air quality is good.
Besides, air particle counter show pm2.5 and pm10 value, 0.3 micron and 2.5 micron value.
Throuh these real data you can convince customers buy this reliable air purifier.


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