Thli tthatnak: A tha tuk
Particulate matter cu 2.5 micrometers nak tlawm deuh a simi particulate matter a si i lung le thi chung ah a lut kho i ngandamnak lei harnak fakpi a chuahter. A fak bikmi hnahnawhnak cu cuap le lung ah a si. Aa tongmi nih khuh asiloah thawchuah harnak a chuahter khawh, thawchuah harnak a zualter khawh i thawchuahnak zawtnak a chuahter khawh.