| Bertrandt AG |
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| Bretzfeld (ZR GmbH & Co. KG) |
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| Ehningen (Projektgesellschaft) |
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| Ehningen (Technikum) |
|
Altenburg |
| Hamburg |
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Bremen |
| Ingolstadt |
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| Köln |
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| München |
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| Neckarsulm |
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| Rüsselsheim |
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| Wolfsburg |
|
Stadthagen |
| France: Paris |
|
Sochaux |
| Great Britain: Dunton |
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| Sweden: Trollhättan |
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| Spain: Barcelona |
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| USA: Detroit |
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