| Kundenname | Stadt | Land |
|---|---|---|
| Hexion Specialty Chemicals Forest Products GmbH, | Leuna | Germany |
| HIT GmbH | Hamburg | Germany |
| Hitachi Power Europe GmbH | Oberhausen | Germany |
| Hochschule Bochum | Bochum | Germany |
| Hochschule Fulda | Fulda | Germany |
| Hochschule für angewandte Wissenschaften - | München | Germany |
| Hochschule Mannheim | Mannheim | Germany |
| Hochschule Merseburg (FH) | Merseburg | Germany |
| HOERBIGER Automatisierungstechnik GmbH | Schongau | Germany |
| Holborn Europa Raffinerie GmbH | Hamburg | Germany |
| Holter Regelarmaturen GmbH & Co KG | Schloß Holte-Stukenbrock | Germany |
| Honeywell Gas Technolgies GmbH | Kassel | Germany |
| Honeywell Safety Management Systems GmbH | Mannheim | Germany |
| hte GmbH | Heidelberg | Germany |
| HTWS Zittau-Görlitz | Zittau | Germany |
| Hüttenwerke Krupp Mannesmann GmbH | Duisburg | Germany |
| HWFB Systemtechnik GmbH | Oststeinbek | Germany |
| IBB Informationssysteme Beratungs | Neu-Isenburg | Germany |
| IBF | Bruckmühl | Germany |
| ICIG Business Services GmbH | Wuppertal | Germany |
| ICODOS GmbH | Mannheim | Germany |
| IGL Ingenieur Gesellschaft Ludwigsfelde mbH | Ludwigsfelde | Germany |
| IHI Corporation | Köln | Germany |
| IKG-Fichtner GmbH & Co KG | Ludwigshafen | Germany |
| ILF Beratende Ingenieure GmbH | München | Germany |