Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT



|                                                              |  |                       |  |                               
|------------------------------------------------------------- |  | --------------------- |  | ------------------------------
|Name                                                          |  | State of Organization |  | Assumed Names                 
|Noble Metal Processing-Ohio, LLC                              |  | Michigan              |  |                               
|Noble Silao de Mexico, S. de R.L. de C.V.+                    |  | Mexico                |  |                               
|Noble Summit Metal Processing de Mexico, S. de R.L. de C.V.++ |  | Mexico                |  |                               
|Noble Metal Processing Holding, S. de R.L. de C.V.            |  | Mexico                |  |                               
|Noble Tube Technologies, LLC                                  |  | Michigan              |  |                               
|Noble Metal Processing-Australia Pty. Ltd.                    |  | Australia             |  |                               
|Prototech Laser Welding, Inc.                                 |  | Michigan              |  | LWI Laser WeldingInternational
|Noble Advanced Technologies, Inc.                             |  | Michigan              |  |                               
|Noble Metal Processing, Inc.                                  |  | Michigan              |  |                               
|Noble Land Holdings, Inc.                                     |  | Michigan              |  |                               
|Noble Manufacturing Group, Inc.                               |  | Michigan              |  |                               
|Noble Metal Processing Canada, Inc.                           |  | Canada                |  |                               
|Noble Metal Processing-Kentucky, GP                           |  | Michigan              |  |                               
|Noble Logistic Services, Inc.                                 |  | Michigan              |  |                               
|Central Transportation & Delivery, Inc.                       |  | Delaware              |  |                               
|Noble Construction Equipment, Inc.                            |  | Tennessee             |  |                               
|Noble Components & Systems, Inc.                              |  | Michigan              |  |                               
|Noble Logistic Services, Inc.                                 |  | California            |  |                               
|Pullman Industries, Inc.                                      |  | Michigan              |  |                               
|Pullman Industries of Indiana, Inc.                           |  | Indiana               |  |                               
|Pullman Investments, LLC                                      |  | Delaware              |  |                               
|Pullman AG, Zug                                               |  | Switzerland           |  |                               
|Pullman de Mexico S.A. de C.V.                                |  | Mexico                |  |                               
|Pullman de Queretero S.A. de C.V.                             |  | Mexico                |  |                               
|Pullman de Puebla S.A. de C.V.                                |  | Mexico                |  |                               
|Pullman Administración S.A. de C.V.                           |  | Mexico                |  |                               
|WLP Properties, S. de R.L. de C.V.                            |  | Mexico                |  |                               
|Noble Swiss Holdings, LLC                                     |  | Michigan              |  |                               
|Noble Holdings International, LLC                             |  | Michigan              |  |                               
|Noble Metal Processing Asia Limited                           |  | Hong Kong             |  |                               
|WISCO Noble (Wuhan) Laser Welding Technology Co. Ltd.+++      |  | China                 |  |                               

---

|+ | Subsidiary owned 99% by Noble Summit Metal processing de Mexico, S. de R.L. de C.V. and 1% by Noble Manufacturing Group, Inc.
|- | -----------------------------------------------------------------------------------------------------------------------------

|++ | Subsidiary owned 51% by Noble Metal Processing Holding, S. de R.L. de C.V. and 49% by Sumitomo Corporation and certain of its affiliates
|-- | ----------------------------------------------------------------------------------------------------------------------------------------

|+++ | Subsidiary owned 50% by Noble Metal Processing Asia Limited and 50% by WISCO Jiangbei Steel Processing and Logistics Co., Ltd.
|--- | ------------------------------------------------------------------------------------------------------------------------------