1. Aerosun Corporation
2. Airborne Oil & Gas BV
3. Changchun Gaoxiang Special Pipes Co. Ltd.
4. Cosmoplast Industrial Company LLC
5. Dalian Yingyu Co. Limited
6. DeepFlex Inc.
7. FlexSteel Pipeline Technologies Inc.
8. Hebei Heng An Tai Pipeline Co. Ltd.
9. Magma Global Ltd.
10. MXROS Inc.
11. National Oilwell Varco Inc.
12. Pipelife International GmbH
13. Polyflow LLC
14. SALVEX Incorporated
15. Shandong Juye Jugong Hose Industry Co. Ltd.