1. Agromaster Agricultural Machinery
2. American Drilling Corp.
3. ANDREAS STIHL AG & Co. KG
4. Autoguide Equipment Ltd.
5. Barbco Inc.
6. Bor-It Mfg. Co. Inc.
7. Champion Equipment Co.
8. Cortech Drilling Equipment Co.Ltd.
9. EMDE Bohrtechnik Nentershausen GmbH
10. Genpower Ltd.
11. Herrenknecht AG
12. Liebherr-International Deutschland GmbH
13. Little Beaver Inc.
14. Makita Corporation
15. Marl Technologies Inc.