1. Alen Corporation
2. AllerAir Industries Inc.
3. Camfil AB
4. Daikin Industries
Ltd.
5. Dyson Limited
6. Eureka Forbes Ltd.
7. Honeywell International Inc.
8. IQAir
9. Kent RO Systems Ltd.
10. Koninklijke Philips N.V.
11. LG Electronics Inc.
12. Molekule
13. Panasonic Corporation
14. Samsung Electronics Co. Ltd.
15. Sharp Corporation
16. Unilever PLC
17. Whirlpool Corporation
18. Winix Inc.
19. Xiaomi Corporation