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In recent years, air pollution is getting worse. Almost all regions of the world are puzzled by this problem. Human health is threatened by it. For example, now as we know PM2.5 is carcinogenic. This helmet is designed for outdoors bikers, whose feature is that it can purify the air. After entering through the front hole，polluted air will be filtered to be purified and pass out. So outdoors bikers can breathe clean air.
Xiangnan Song Xueqing Yu Bao Gao