Air particle counter customized by different countries standard

Basic on different countries air quality standard, so our air particle counter at the beginning design on China pm2.5 standard.
For many countries it is not work well
So we set up another standard basic on interneation WHO pm2.5 standard.
For more countries and  standard, we can design it basic on their requirement, in small order quantity accept.
pm2.5 and pm10 standard will be set up together, more information please discuss with us.

Contact: lanjia.sabrina@gmail.com
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