1. Applied Materials Inc.
2. ASML Holding N.V.
3. Canon Inc.
4. Carl Zeiss AG
5. Eulitha AG
6. EV Group
7. Holmarc Opto-Mechatronics Ltd.
8. HORIBA Group
9. JEOL Ltd.
10. KLA Corporation
11. Lam Research Corporation
12. Micro Electronics Equipment (Group) Co. Ltd.
13. Neutronix Quintel Inc.
14. Newport Corporation
15. Nikon Corporation
16. NuFlare Technology Inc.
17. Omega Optical
LLC
18. Onto Innovation Inc.
19. Osiris International GmbH
20. Samsung Electronics Co. Ltd.
21. Service Support Specialties Inc.
22. S?SS MicroTec SE
23. Taiwan Semiconductor Manufacturing Company Limited
24. Veeco Instruments Inc.