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Exhibit 21.1
List of Subsidiaries of HMH Holding Inc.
| Name |
State or Other Jurisdiction of Incorporation or Organization | |
| Bronco Manufacturing, LLC |
Oklahoma | |
| Drillform Drilling Equipment Inc. |
Delaware | |
| Drillform Oilfield Equipment Services LLC |
United Arab Emirates | |
| Drillform Technical Services Ltd. |
Canada | |
| Electrical Subsea & Drilling AS |
Norway | |
| HMH Drilling Asia Pte. Ltd. |
Singapore | |
| HMH Drilling Engineering Services of India Private Limited |
India | |
| HMH Holding B.V. |
Netherlands | |
| HMH Holding (Netherlands) B.V. |
Netherlands | |
| HMH Turkey Petrol ve Doğal Gaz Ekipmanları ve Hizmetleri Anonim Şirketi | Turkey | |
| Hydril PCB Canada Inc |
Canada | |
| Hydril PCB Limited |
England | |
| Hydril Pressure Controlling Arabia Limited |
Saudi Arabia | |
| Hydril Pressure Control (Senegal) SASU |
Senegal | |
| Hydril Pressure Control S. de R.L. de C.V. |
Mexico | |
| Hydril USA Distribution LLC |
Delaware | |
| MHWirth AS |
Norway | |
| MHWirth do Brasil Equipamentos Ltda |
Brazil | |
| MHWirth Canada Inc. |
Canada | |
| MHWirth Chile SpA |
Chile | |
| MHWirth FZE |
United Arab Emirates | |
| MHWirth Gas & Oil-Field Equipment & Services L.L.C. |
United Arab Emirates | |
| MHWirth GmbH |
Germany | |
| MHWirth HoldCo AS |
Norway | |
| MHWirth India Private Limited |
India | |
| MHWirth LLC |
Delaware | |
| MHWirth Offshore Petroleum Engineering (Shanghai) Co., Ltd |
China | |
| MHWirth Pty Ltd |
Australia | |
| MHWirth (Singapore) Pte Ltd |
Singapore | |
| MHWirth UK Limited |
England | |
| Roughneck Holding Inc. |
Canada |