| Client name | City | Country |
|---|---|---|
| Burkert Schweiz AG | Hünenberg | Switzerland |
| C+E Forum AG | Dübendorf ZH | Switzerland |
| CASALE S.A. | Lugano | Switzerland |
| CCI Valve Technologie GmbH | Wien | Austria |
| Chemgineering Switzerland AG | Münchenstein | Switzerland |
| Clariant Produkte (Schweiz) AG | Muttenz 1 | Switzerland |
| Dipl.Ing. Dkfm. Edtmayer GmbH | Wien | Austria |
| DSM Nutritional Products AG | Visp | Switzerland |
| dsm-firmenich | Sisseln | Switzerland |
| E&C, Ingenieurbüro für | Wels | Austria |
| Emerson Process Management AG | Wiener Neudorf | Austria |
| Emile Egger & Cie SA | Cressier | Switzerland |
| EMS Chemie AG | Domat / Ems | Switzerland |
| Enco Engineering GmbH | Chur | Switzerland |
| Energie AG Oberösterreich Business Services GmbH | Linz | Austria |
| Energy Automation Systems GmbH | Wien | Austria |
| EPC Handelsgesellschaft m.b.H | Wiener Neudorf | Austria |
| EPICON IEaC GmbH | Bad Vöslau | Austria |
| ESIM Chemicals GmbH | Linz | Austria |
| Evonik | Weißenstein | Austria |
| Fisher-Rosemount AG | Wiener Neudorf | Austria |
| Flowserve Control Valves GmbH | Villach | Austria |
| FLOWTEC Industrietechnik GmbH | Graz | Austria |
| FLUVIUS Flow Control GmbH | Wiener Neustadt | Austria |
| Foxboro - Eckardt AG | Basel | Switzerland |
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