| Kundenname | Stadt | Land | 
|---|---|---|
| IFFCO Limited | Iffcotownship S.O | India | 
| IGL Ingenieur Gesellschaft Ludwigsfelde mbH | Ludwigsfelde | Germany | 
| iHandl Engineering bvba | Assenede | Belgium | 
| IHI Corporation | Köln | Germany | 
| IKG-Fichtner GmbH & Co KG | Ludwigshafen | Germany | 
| ILF Beratende Ingenieure GmbH | München | Germany | 
| ILF Beratende Ingenieure GmbH | München | Germany | 
| ILF Consulting Engineers Austria GmbH | Wien | Austria | 
| ILF Consulting Engineers Austria GmbH | Leobersdorf | Austria | 
| ILVA S.P.A. | Taranto | Italy | 
| Impac Offshore Engineering GmbH | Hamburg | Germany | 
| INA-ÖKI-TEM | Zagreb | Croatia | 
| Inaceinox SA | Vale de Cambra | Portugal | 
| Indian Farmers Fertilizers Co-Opertaive Ltd. | Phulpur | India | 
| Indian Farmers Fertilizers Co-Opertaive Ltd. | Gandhinagar | India | 
| Indian Institute of Chemical Technology | Hyderabad | India | 
| Indian Oil Corporation Limited | Noida | India | 
| Indian Oil Corporation Limited | Haldia | India | 
| Indian Oil Corporation Limited | Vadodara | India | 
| Indian Oil Corporation Limited | Digboi | India | 
| Indian Oil Corporation Limited | Bongaigaon | India | 
| Indian Oil Corporation Limited | Guwahati | India | 
| Indian Oil Corporation Limited | Mathura | India | 
| Indian Oil Corporation Limited | Panipat | India | 
| Indian Oil Corporation Limited | Barauni | India |