Adults inhale 10000dl of air. How many toxic and hazardous substances are mixed in the air? Of course, you can place air cleaner in your house but no one can avoid the possibility of inhaling toxic and hazardous air pollution whenever you go out.
According to the announcement from WTO, there are at least 3 million people who died of air pollution every year on average and the mortality is still increasing yearly. These airs with PM 2.5 are now spreading worldwide and no one can keep out of this affair. Improving air pollution situation is the most important thing for humans now. Everyone has the responsibility and obligation to make efforts to improve the global environment on earth.
The size of these PM 2.5 particles are about 1/28 of human hair and the respiration system of human cannot block these toxic waste gas to avoid them passing from alveolar to blood. This is the reason why PM2.5 is the killer ranked first for human health.