1. 3m Company
2. AB SKF
3. Astec Industries Inc.
4. Baker Hughes Company
5. Banpong Screen Pipe Co. Ltd.
6. Completion Products pte ltd.
7. Continental Steel Corporation
8. Delta Screen & Filtration
LLC
9. Dorstener Drahtwerke H.W. Brune & Co. GmbH
10. Halliburton Company
11. Marwell AS
12. Packers Plus Energy Services Inc.
13. Schlumberger Limited
14. Superior Energy Services Inc.
15. Tendeka
16. Tianjin Elegant Technology
17. Trelleborg AB
18. Variperm Energy Services
19. VOTS
20. Weatherford International PLC
21. Welltec A/S