Sikhs walk into the AirHavn, a clean air zone set up in New Delhi, India, June 13, 2018. AirHavn is a pilot project by Evergen and Airlabs to combat air pollution. (Xinhua/Stringer)
AirHavn, pilot project to combat air pollution, set up in India
Source: Xinhua| 2018-06-13 21:51:34|Editor: Li Xia
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