1. Atlas Copco AB
2. Baker Hughes Company
3. Bit Brokers International
Ltd.
4. Cangzhou Great Drill Bits Co. Ltd.
5. Halliburton Company
6. HARTNER GmbH
7. Hilti India Pvt. Ltd.
8. IZAR CUTTING TOOLS S.A.L.
9. Kingdream Public Limited Company
10. Makita Singapore Pte. Ltd.
11. MISUMI Corporation
12. NewTech Services Holding Limited
13. NOV Inc.
14. Patterson-UTI Energy Inc.
15. Robert Bosch GmbH
16. Rockpecker Limited
17. RUKO GmbH
18. Sandvik AB
19. Schlumberger Limited
20. Scientific Drilling International
21. Stanley Black & Decker Inc.
22. Torquato Drilling Accessories Inc.
23. Ulterra Drilling Technologies
L.P.
24. VAMAC Inc.
25. Weatherford International PLC