| Name | City | Country | |
|---|---|---|---|
|  | eagleyard Photonics GmbH | Berlin | Germany | 
|  | Ebnet Medical GmbH | Schwerin | Germany | 
|  | Ehrfeld Mikrotechnik BTS GmbH | Wendelsheim | Germany | 
|  | ELMOS Semiconductor SE | Leverkusen | Germany | 
|  | ELSCHUKOM GmbH | Veilsdorf | Germany | 
| ENEA | Portici (Napoli) | Italy | |
|  | EOSWISS Engineering Sàrl | Geneve | Switzerland | 
|  | EPIC – European Photonics Industry Consortium | France | |
|  | Epiphany Photonic Design House | Enschede | Netherlands | 
|  | EPnP Medical GmbH | Neuhausen | Germany | 
|  | ES Systems | Koropi - Athens | Greece | 
|  | ess Mikromechanik GmbH | Stockach-Windegg | Germany |