China builds ‘world’s biggest air purifier’ (and it seems to be working) 2018-01-17 Leave a Comment on China builds ‘world’s biggest air purifier’ (and it seems to be working) A 100-metre high air purification tower in Xian in Shaanxi province has helped reduce smog levels in the city, preliminary results suggest. Source: China builds ‘world’s biggest air purifier’ (and it seems to be working)
