1. AB-CO PURGE LLC
2. ABB Ltd.
3. Abtech UK
4. Aegex Technologies
LLC
5. Amphenol Corporation
6. Andel Ltd.
7. Ashcroft Inc.
8. Assa Abloy AB
9. Atexor Oy
10. BARTEC Top Holding GmbH
11. Cortem S.p.A.
12. Craig & Derricott Limited
13. Crowcon Detection Instruments Ltd
14. Danfoss A/S
15. Dr?gerwerk AG & Co. KGaA
16. Dwyer Instruments Inc.
17. Eaton Corporation PLC
18. eltherm GmbH
19. Emerson Electric Co.
20. Endress+Hauser AG
21. European Safety Systems Limited
22. Federal Signal Corporation
23. Fluke Corporation
24. General Electric Company
25. Hitachi
Ltd.
26. Honeywell International Inc.
27. Hubbell Incorporated
28. Johnson Controls International PLC
29. Katronic AG & Co. KG
30. Larson Electronics
LLC
31. Marechal Electric Group
32. Mitsubishi Electric Corporation
33. MSA Safety Incorporated
34. Omron Corporation
35. PATLITE Corporation
36. Petrel Ltd.
37. Phoenix Contact Group
38. Potter Electric Signal Company
LLC
39. Process Sensing Technologies
40. RKI Instruments Inc.
41. Rockwell Automation Inc.
42. RSTAHL Aktiengesellschaft
43. Schneider Electric SE
44. SICK AG
45. Siemens AG
46. Teledyne Technologies Incorporated
47. Turck Holding GmbH
48. WEG S.A.
49. WIKA Alexander Wiegand SE & Co. KG
50. Yokogawa Electric Corporation