1. Cardno Limited
2. Geocarte Radar Technology Pvt.Ltd.
3. GeoModel Inc.
4. Geophysical Survey Systems Inc.
5. Geotec Surveys Ltd.
6. Ground Penetrating Radar Systems
LLC
7. Guideline Geo AB
8. Hexagon Geosystems AG
9. Maverick Inspection Ltd.
10. MultiVIEW Locates Inc.
11. Parsan Overseas Private Limited
12. Plowman Craven Limited
13. ProStar Geocorp Inc.
14. SECON Private Limited
15. Sensors & Software Inc.
16. Stanlay
17. Technics Group
18. US Radar Inc.
19. Vivax-Metrotech Corp