Faced with such serious smog and haze, a reporter from Henan speaks with residents about PM 2.5 masks that are useful for blocking dust and smog. A doctor is also interviewed about the effectiveness of such masks and how residents can prevent diseases caused by smog in their daily lives.
Se desideri guardare questo e altri video, ottieni la nostra prova gratuita.
inglese
tedesco
italiano
francese
English
Français
Deutsch
Español
Italiano 
Português
