Exhibit 21.1

Subsidiaries of Aleris International, Inc. as of March 30, 2008



|    |  |                                                                                           |  |                                   |  |                
|--- |  | ----------------------------------------------------------------------------------------- |  | --------------------------------- |  | ---------------
|    |  | Subsidiary                                                                                |  | State ofIncorporation / Formation |  | AlerisOwnership
|1.  |  | Alchem Aluminum, Inc.                                                                     |  | Delaware                          |  | 100%           
|2.  |  | Alchem Aluminum Shelbyville Inc.                                                          |  | Delaware                          |  | 100%           
|3.  |  | Aleris Aluminum Austria GmbH f/k/a Corus Aluminium Verkauf GmbH                           |  | Austria                           |  | 100%           
|4.  |  | Aleris Aluminum Belgium BVBA                                                              |  | Belgium                           |  | 100%           
|5.  |  | Aleris Aluminum Bitterfeld GmbH f/k/a Corus Aluminium
Profiltechnik Bitterfeld GmbH       |  | Germany                           |  | 100%           
|6.  |  | Aleris Aluminum Bonn GmbH f/k/a Corus Aluminium Profiltechnik Bonn GmbH                   |  | Germany                           |  | 100%           
|7.  |  | Aleris Aluminum Canada Holding 2, Inc. f/k/a Corus Aluminium Inc.                         |  | Canada                            |  | 100%           
|8.  |  | Aleris Aluminum Canada L.P. f/k/a Corus L.P.                                              |  | Canada                            |  | 100%           
|9.  |  | Aleris Aluminum Denmark ApS                                                               |  | Denmark                           |  | 100%           
|10. |  | Aleris Aluminum Duffel BVBA f/k/a Corus Aluminium BVBA                                    |  | Belgium                           |  | 100%           
|11. |  | Aleris Aluminum Europe, Inc. f/k/a Hoogovens Aluminium Europe Inc.                        |  | Delaware                          |  | 100%           
|12. |  | Aleris Aluminum France SAS                                                                |  | France                            |  | 100%           
|13. |  | Aleris Aluminum GmbH f/k/a Corus Aluminium GmbH                                           |  | Germany                           |  | 100%           
|14. |  | Aleris Aluminum Italy Srl f/k/a Corus Aluminium Rolled Products, Italia Srl               |  | Italy                             |  | 100%           
|15. |  | Aleris Aluminum Japan, Ltd. f/k/a Corus Aluminium Japan, Ltd.                             |  | Japan                             |  | 100%           
|16. |  | Aleris Aluminum Koblenz GmbH f/k/a Corus Aluminium Walzprodukte GmbH                      |  | Germany                           |  | 100%           
|17. |  | Aleris Aluminum Netherlands B.V. f/k/a Corus Aluminium Rolled Products B.V.               |  | Netherlands                       |  | 100%           
|18. |  | Aleris Aluminum Sales Europe GmbH f/k/a Aleris Aluminium Products GmbH                    |  | Germany                           |  | 100%           
|19. |  | Aleris Aluminum Service Center NV f/k/a Corus Aluminium Service Center NV                 |  | Belgium                           |  | 100%           
|20. |  | Aleris Aluminum Spain, S.A. f/k/a Corus Aluminium Espana SA                               |  | Spain                             |  | 100%           
|21. |  | Aleris Aluminum UK Limited                                                                |  | United Kingdom                    |  | 100%           
|22. |  | Aleris Aluminum U.S. Sales, Inc. f/k/a Corus Aluminium Corp.                              |  | Delaware                          |  | 100%           
|23. |  | Aleris Aluminum Vogt GmbH f/k/a Corus Aluminium Profiltecknik GmbH                        |  | Germany                           |  | 100%           
|24. |  | Aleris Aluminum Vogt GmbH [sp z.o.o.] f/k/a Corus Aluminium
Profiltechnik GmbH sp. z o.o. |  | Poland                            |  | 100%           
|25. |  | Aleris Asia Pacific International (Barbados) Ltd.                                         |  | Barbados                          |  | 100%           
|26. |  | Aleris Asia Pacific Limited                                                               |  | Hong Kong                         |  | 100%           
|27. |  | Aleris Belgium BVBA                                                                       |  | Belgium                           |  | 100%           
|28. |  | Aleris Blanking and Rim Products, Inc. f/k/a Indiana Aluminum Inc.                        |  | Indiana                           |  | 100%           
|29. |  | Aleris Deutschland Beteiligungsunternehmen Duffel GmbH                                    |  | Germany                           |  | 100%           
|30. |  | Aleris Deutschland Holding GmbH                                                           |  | Germany                           |  | 100%           
|31. |  | Aleris Deutschland Vier GmbH Co KG                                                        |  | Germany                           |  | 100%           
|32. |  | Aleris Deutschland Vierte Verwaltungs GmbH                                                |  | Germany                           |  | 50%            
|33. |  | Aleris Gibraltar Limited                                                                  |  | Gibraltar                         |  | 100%           
|34. |  | Aleris Global Luxembourg S.a.r.l                                                          |  | Luxembourg                        |  | 100%           
|35. |  | Aleris Holding Belgium BVBA                                                               |  | Belgium                           |  | 100%           
|36. |  | Aleris Holding Canada Limited                                                             |  | Canada                            |  | 100%           
|37. |  | Aleris Holding Luxembourg S.a.r.l                                                         |  | Luxembourg                        |  | 100%           
|38. |  | Aleris Holding Luxembourg S.a.r.l & Co. KG                                                |  | Germany                           |  | 100%           



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|    |  |                                                                                                                                   |  |                |  |     
|--- |  | --------------------------------------------------------------------------------------------------------------------------------- |  | -------------- |  | ----
|39. |  | Aleris Holding Norway AS                                                                                                          |  | Norway         |  | 100%
|40. |  | Aleris Hylite B.V. f/k/a Corus Hylite B.V.                                                                                        |  | Netherlands    |  | 100%
|41. |  | Aleris Inc.                                                                                                                       |  | Delaware       |  | 100%
|42. |  | Aleris Latasa Reciclagem S.A.                                                                                                     |  | Brazil         |  | 100%
|43. |  | Aleris Light Gauge Products, Inc. f/k/a E Street Acquisition Corporation                                                          |  | Delaware       |  | 100%
|44. |  | Aleris Luxembourg S.a.r.l                                                                                                         |  | Luxembourg     |  | 100%
|45. |  | Aleris Mexico, S. de R.L. de C.V. f/k/a IMCO Reciclaje de Mexico, S. de R.L. de C.V.                                              |  | Mexico         |  | 100%
|46. |  | Aleris Nevada Management, Inc.                                                                                                    |  | Nevada         |  | 100%
|47. |  | Aleris New Gibraltar Limited                                                                                                      |  | Gibraltar      |  | 100%
|48. |  | Aleris Nuevo Leon, S. de R.L. de C.V. f/k/a IMCO Reciclaje de
Nuevo Leon, S. de R.L de C.V.                                       |  | Mexico         |  | 100%
|49. |  | Aleris Ohio Management, Inc.                                                                                                      |  | Delaware       |  | 100%
|50. |  | Aleris Participacoes Ltda. (formerly Aleris South America Ltda.)                                                                  |  | Brazil         |  | 100%
|51. |  | Aleris Reciclagem Ltda. f/k/a IMCO Reciclagem de Materiais
Indústria e Comércio Ltda.                                             |  | Brazil         |  | 100%
|52. |  | Aleris Reciclaje Servicios Administrativos, S. de R.L. de C.V. f/k/a IMCO Reciclaje Servicios
Administrativos, S. de R.L. de C.V. |  | Mexico         |  | 100%
|53. |  | Aleris Reciclaje Servicios de Manufactura, S. de R. L. de C.V. f/k/a IMCO Reciclaje Servicios de
Manufactura, S. de R.L. de C.V.  |  | Mexico         |  | 100%
|54. |  | Aleris Recycling (German Works) GmbH f/k/a VAW-IMCO Guß und Recycling GmbH                                                        |  | Germany        |  | 100%
|55. |  | Aleris Recycling Holding B.V. f/k/a IMCO Recycling Holding B.V.                                                                   |  | Netherlands    |  | 100%
|56. |  | Aleris Recycling Netherlands B.V.                                                                                                 |  | Netherlands    |  | 100%
|57. |  | Aleris Recycling (Swansea) Ltd. f/k/a IMCO Recycling (UK) Ltd.                                                                    |  | United Kingdom |  | 100%
|58. |  | Aleris (Shanghai) Trading Co. Ltd.                                                                                                |  | China          |  | 100%
|59. |  | Aleris Specification Alloy Products Canada Company                                                                                |  | Canada         |  | 100%
|60. |  | Aleris Switzerland GmbH                                                                                                           |  | Switzerland    |  | 100%
|61. |  | Aleris Technology (Netherlands) BV                                                                                                |  | Netherlands    |  | 100%
|62. |  | Alerisalu Aluminum Portugal, Unipessoal, Lda. f/k/aHoogovens
Aluminium Portugal Lda.                                              |  | Portugal       |  | 100%
|63. |  | ALSCO Holdings, Inc.                                                                                                              |  | Delaware       |  | 100%
|64. |  | ALSCO Metals Corporation                                                                                                          |  | Delaware       |  | 100%
|65. |  | Aluminum Recycling Services, S. de R.L. de C.V.                                                                                   |  | Delaware       |  | 100%
|66. |  | Alumitech, Inc.                                                                                                                   |  | Delaware       |  | 100%
|67. |  | Alumitech of Cleveland, Inc.                                                                                                      |  | Delaware       |  | 100%
|68. |  | Alumitech of Wabash, Inc.                                                                                                         |  | Indiana        |  | 100%
|69. |  | Alumitech of West Virginia, Inc.                                                                                                  |  | Delaware       |  | 100%
|70. |  | Alumox AS                                                                                                                         |  | Norway         |  | 100%
|71. |  | Alumox Holding AS1                                                                                                                |  | Norway         |  | 100%
|72. |  | AWT Properties, Inc.2                                                                                                             |  | Ohio           |  | 100%
|73. |  | BUG-Alutechnik GmbH                                                                                                               |  | Germany        |  | 100%
|74. |  | CA Lewisport, LLC                                                                                                                 |  | Delaware       |  | 100%
|75. |  | CI Holdings, LLC                                                                                                                  |  | Delaware       |  | 100%
|76. |  | Commonwealth Aluminum, LLC                                                                                                        |  | Delaware       |  | 100%
|77. |  | Commonwealth Aluminum Concast, Inc.                                                                                               |  | Ohio           |  | 100%



2This entity will be merged into Aleris Holding Norway AS with Aleris Holding Norway AS being the survivor entity. Once official, this merger will be effective from April 1, 2008.

2This entity will be merged into Alumitech of Cleveland, Inc. with Alumitech of Cleveland, Inc. being the survivor entity. Once official, this merger will be effective from April 1, 2008.



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|     |  |                                                            |  |             |  |     
|---- |  | ---------------------------------------------------------- |  | ----------- |  | ----
|78.  |  | Commonwealth Aluminum Lewisport, LLC                       |  | Delaware    |  | 100%
|79.  |  | Commonwealth Aluminum Metals, LLC                          |  | Delaware    |  | 100%
|80.  |  | Commonwealth Aluminum Sales Corporation                    |  | Delaware    |  | 100%
|81.  |  | Commonwealth Aluminum Tube Enterprises, LLC                |  | Delaware    |  | 100%
|82.  |  | Commonwealth Industries, Inc.                              |  | Delaware    |  | 100%
|83.  |  | Corus Aluminium Extrusions Tianjin Co Ltd                  |  | China       |  | 61% 
|84.  |  | Duinlust Grundstucks GmbH                                  |  | Germany     |  | 100%
|85.  |  | Dutch Aluminum C.V.                                        |  | Netherlands |  | 100%
|86.  |  | ETS Schaefer Corporation                                   |  | Ohio        |  | 100%
|87.  |  | Granular Aluminum Products, Inc.                           |  | Illinois    |  | 100%
|88.  |  | Grundstucksverwaltungsgesellschaft Objekt Wallershein GmbH |  | Germany     |  | 100%
|89.  |  | HT Aluminum Specialties, Inc.                              |  | Illinois    |  | 100%
|90.  |  | IMCO Indiana Partnership L.P.                              |  | Indiana     |  | 100%
|91.  |  | IMCO International, Inc.                                   |  | Delaware    |  | 100%
|92.  |  | IMCO Investment Company                                    |  | Delaware    |  | 100%
|93.  |  | IMCO Management Partnership L.P.                           |  | Texas       |  | 100%
|94.  |  | IMCO Recycling of California, Inc.                         |  | Delaware    |  | 100%
|95.  |  | IMCO Recycling of Idaho Inc.                               |  | Delaware    |  | 100%
|96.  |  | IMCO Recycling of Illinois Inc.                            |  | Illinois    |  | 100%
|97.  |  | IMCO Recycling of Indiana Inc.                             |  | Delaware    |  | 100%
|98.  |  | IMCO Recycling of Michigan L.L.C.                          |  | Delaware    |  | 100%
|99.  |  | IMCO Recycling of Ohio Inc.                                |  | Delaware    |  | 100%
|100. |  | IMCO Recycling of Utah Inc.                                |  | Delaware    |  | 100%
|101. |  | IMCO Recycling Services Company                            |  | Delaware    |  | 100%
|102. |  | IMCO Recycling (UK) Ltd.                                   |  | England     |  | 100%
|103. |  | IMSAMET, Inc.                                              |  | Delaware    |  | 100%
|104. |  | Imsamet of Arizona                                         |  | Arizona     |  | 70% 
|105. |  | MetalChem Handel GmbH                                      |  | Germany     |  | 100%
|106. |  | Reox AS                                                    |  | Norway      |  | 100%
|107. |  | Rock Creek Aluminum, Inc.                                  |  | Ohio        |  | 100%
|108. |  | Silver Fox Holding Corp.                                   |  | Delaware    |  | 100%
|109. |  | U.S. Zinc Export Corporation                               |  | Texas       |  | 100%
|110. |  | Wabash Alloys, LLC                                         |  | Delaware    |  | 100%



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