The report, A Review of 20 years" Air Pollution Control in Beijing, was compiled by a UN Environment-led team of international and Chinese experts over two years.
Ripoti hiyo, Mapitio ya Miaka 20" Udhibiti wa Uchafuzi wa Hewa mjini Beijing, iliandaliwa na timu ya Umoja wa Mataifa inayoongozwa na Mazingira ya wataalam wa kimataifa na wa China kwa muda wa miaka miwili.