Indoor air population causes an average of 304 deaths per day in 皇冠体育app, 皇冠体育app Youth Daily reported Thursday, quoting a survey.
The survey, released by the 皇冠体育app National Interior Decoration Association, shows 111,000 Chinese people are dying from indoor air pollution every year.
The average Chinese citizen does not have a clear idea of indoor air pollution, which poses an invisible threat to people's health, said the association.