1. Panasonic Corporation
2. Mitsubishi Electric Corporation
3. Daikin Industries
Ltd.
4. Bosch Thermotechnology Ltd.
5. LG Electronics Inc.
6. NIBE Group
7. Vaillant Group
8. Stiebel Eltron GmbH & Co. KG
9. Viessmann Climate Solutions
10. Glen Dimplex Group