1. Ariel Corporation
2. BAUER Compressors Inc.
3. Burckhardt Compression AG
4. Enerflex Ltd.
5. General Electric Company
6. Hitachi
Ltd.
7. Howden Group Limited by Chart Industries Inc.
8. Ingersoll Rand Inc.
9. J.P. Sauer & Sohn Maschinenbau GmbH
10. Kobe Steel
Ltd.
11. Mitsui & Co. Ltd.
12. Siemens AG