(P279)	(Q12773274)
(P2283)	(Q1196206)

External Links

(P1014)	300055364
(P2671)	/g/123dmf9s1
(P3417)	Air-Purification
(P3827)	air-purification
(P10376)	chemistry/air-purification earth-and-planetary-sciences/air-purification engineering/air-purification