1. Airgle corporation
2. Alen Corporation
3. AllerAir Industries Inc.
4. Austin Air Systems Limited
5. Beijing Yadu Environmental Protection Technology Co. Ltd.
6. Carrier Global Corporation
7. Daikin Industries
Ltd.
8. Dyson Limited
9. Honeywell International Inc.
10. Hunter Pure Air
11. IQAir
12. Kent RO Systems Ltd.
13. Koninklijke Philips N.V.
14. LG Corporation
15. Panasonic Corporation
16. Samsung Electronics Co. Ltd.
17. Sharp Corporation
18. The Camfil Group
19. Unilever Group
20. Whirlpool Corporation
21. Winix Co. Ltd.
22. Woongjin Coway Co. Ltd.
23. Xiaomi Corporation