![Gallery of ZNERA Proposes a Network of Smog Filtering Towers To Combat Delhi's Rising Pollution Levels - 5 Gallery of ZNERA Proposes a Network of Smog Filtering Towers To Combat Delhi's Rising Pollution Levels - 5](https://images.adsttc.com/media/images/5ba3/ea17/f197/cc36/9f00/0822/slideshow/5.jpg?1537468929)
Gallery of ZNERA Proposes a Network of Smog Filtering Towers To Combat Delhi's Rising Pollution Levels - 5
![The world's largest air purifier "smog filtering tower" (smog free tower) is pictured outside the Dalian International Conference Center in Dalian cit Stock Photo - Alamy The world's largest air purifier "smog filtering tower" (smog free tower) is pictured outside the Dalian International Conference Center in Dalian cit Stock Photo - Alamy](https://c8.alamy.com/comp/W7PN4C/the-worlds-largest-air-purifier-smog-filtering-tower-smog-free-tower-is-pictured-outside-the-dalian-international-conference-center-in-dalian-cit-W7PN4C.jpg)
The world's largest air purifier "smog filtering tower" (smog free tower) is pictured outside the Dalian International Conference Center in Dalian cit Stock Photo - Alamy
![The world's largest air purifier "smog filtering tower" (smog free tower) is pictured outside the Dalian International Conference Center in Dalian cit Stock Photo - Alamy The world's largest air purifier "smog filtering tower" (smog free tower) is pictured outside the Dalian International Conference Center in Dalian cit Stock Photo - Alamy](https://c8.alamy.com/comp/W7PMT2/the-worlds-largest-air-purifier-smog-filtering-tower-smog-free-tower-is-pictured-outside-the-dalian-international-conference-center-in-dalian-cit-W7PMT2.jpg)