- Optical Refurbishment Center GmbH
- Address:2-6 Werner-von-Siemens Street
- Proserion
- Address:Kohlenweg 7a
- MESH GmbH
- Address:In Der Steele 37A
- WiFi-Link Technologien (DE) Ltd.
- Address:Otto-Raggenbass-Str. 5
- Voip-discount K. Vrban
- Address:Kardinal-galen-str.4
- Communication Partner Sales GmbH
- Address:Wilhelm-Loh-Strasse 12
- VOIPPE Ltd
- Address:Kaiser Str 23
- Didactum Security GmbH
- Address:Marsweg 17
- Cm Mobilfunk
- Address:Blumenstr.19
- TASSTA GmbH
- Address:Kniestrasse 27
- SKM Skyline GmbH
- Address:Schatzbogen 50
- StylishPower UG (haftungsbeschraenkt)
- Address:Ungelsheimer weg 7
- LyconSys GmbH & Co.KG
- Address:Schleusenstr. 9
- IT-System Sales
- Address:Westendallee 87
- PURtel.com
- Address:
- Eurodata Telecommunications Group
- Address:Wilhem-Busch-Strasse 4
- RubyTech Deutschland GmbH
- Address:Muehlenstr. 18
- Wiederaufbau GmbH
- Address:Shitportstr. 40
- SENTAL Export GmbH
- Address:Ziethenstrasse 18
- Meldana
- Address:Ernst-Kiessig Str. 1