China just built world’s largest air purifier
Tech MavenSuperPositionTechChina just built world’s largest air purifier …Peter ChristiansenChina just built world’s largest air purifier China builds ‘world’s biggest air purifier’ (and it works)A 100-metre high air purification tower in Xian in Shaanxi province has helped reduce smog levels in the city, preliminary results suggest.www.scmp.com