References (International):

the United Nations, UNFCCC, (international) laptops and hard drives: repair & service
DHL station Dubai, Dubai, United Arab Emirates, laptops: repair & service
Travel-Tours-Agency, Makati City, Metro Manila, Philippines, computer & laptop: repair & service
Coffeema Int.Trading LLC, Dubai, United Arab Emirates, electronics controllers: repair & service
Intelematic Technologies Pvt. Ltd., Gujarat, India, electronicsfuel sensors: development & prototyping
ALGAE-X International, FortMyersBeach (FL), USA, electronicssensors: development & prototyping
Turnkey Innovations Lauth, Dubai, United Arab Emirates, audio-video equipment: repair & service
Yasaki vehicle parts, Tokio, Japan mesurement equipment: repair & service
H & A Brüllhardt, Heitenried, Switzerland, electronics controllers: repair & service
RICCO Metallbau, Basadingen, Switzerland, electronics controllers: repair & service
Egger IT, Muehlbach (BZ)Meran, Italy, electronics controllers, power adaptors: repair & service
GTC, Alberta, Canada electronics controllers, terra gator move controllers: repair & service
DBY, Newport, Sydney, Australia electronics controllers: repair & service
CBS Studios, Chiswick High Rd., London, United Kingdom electronicsaudio controllers: installation, repair & service
Brisbane Shipyard Marine, Brisbane, Australia electronics& trimming controllers: repair & service
CHEW Tech Ltd., Malaysia, electronicssensors: development & prototyping
May Invento Mahilum, Mandalujong City, Metro Manila, Philippines, Notebook / Netbook / Tablet: repair & service
Agencia Tropical SL, Almunecar, Espana computers and company network: installation and repair & service
LaLibertad Internet Cafe', Almunecar, Espana computers and company network: installation and repair & service
Zen II Net Internet Cafe', Almunecar, Espana computers and company network: installation and repair & service
BR Audio Studio Bruessel, Bruessel, Belgium, audio converter-transposers: development & prototyping
RTN Racing (Bentley), Norwich, United Kingdom, electronicsoil sensors: development & prototyping
Bentley Luxembourg, Luxembourg, electronicscar diagnosis equipment: repair & service
CERN Genf, Switzerland / France, electronicssensors: special developments
GUY, Valerie, Cote'Azur, France, audio-video equipment: repair & service
Travel&Tours-Center, Business Service, Manila Makati, Philippines, computer & laptop: repair & service
DHL-Station Manila, Kamagong St., Manila Makati, Philippines, computer & laptop: repair & service
Demalin Cortez Teaching, Quezon City, Metro Manila, Philippines, computer & laptop: repair & service
Castle Hotel, Sabang Beach, Sabang, Mindoro, Philippines, guest's notebooks & laptops: repair & service

References (in Germany):

Airport Hangelar (simulator training center), Hangelar, Germany, simulator computers: repair & service
the University of Bonn, electronics controllers & laptops & audio-video systems & lab equipment: repair & service
University Clinic Bonn, Bonn, Germany, electronicssystems: repair & service
TrueAudio, Event Technology and Management, Bonn, Germany, audio-video systems: repair & service
Volkswagen AG, VWCG, Wolfsburg, Germany, electronicssensors: development & prototyping
Daimler AG Stuttgart, Stuttgart, Germany, electronicsconnect elements: development & prototyping
Exklusiv Service 24, Ennepetal, Germany, computers and company network: repair & service
B & N Fahrzeugtechnik, Berlin, Germany, electronicscar controllers: repair & service
ETB Reinig Telekommunikation, St.Johann, Germany, electronics controllers: repair & service
FUCHS Baumaschinen, Bonn, Germany, industry electronics controllers: crane controllers repair
Stadtwerke Bonn, Bonn, Germany, laptops and audio-video systems: repair & service
P & M Elektronik, Bonn, Germany, laptops and audio-video systems: repair & service
Albaad Deutschland GmbH, Ochtrup, Germany, industry computers, electronicsproduction controllers: repair & service
PS security systems, Euskirchen, Germany, security systems and laptops: repair & service
Hotel Hilton, Bonn, Germany, guest's notebooks & laptops: repair & service
Hotel Aigner, Bonn, Germany, guest's notebooks & laptops: repair & service
B & C vietnam restaurant, Bonn, Germany, laptops: repair & service
DreselCom Communications, Bayern, Germany, audio-video systems: repair & service
BronxRock Kletterhalle, Wesseling, Germany, electronics controllers: repair & service
Fraunhofer Institut, Schloss Birlinghoven, Germany, electronics controllers: repair & service
Effekta, Tettnang, Germany, electronicsbattery management systems: development & prototyping bacs
Wilbert Medizintechnik, Germany, electronics controllers, medicine equipment systems: repair & service
Jork Medizintechnik, Jork, Germany, medicine equipment systems: development & prototyping lih interface
CinemaxX Entertainment, Halle and Hamburg, Germany, electronics controllers: repair & service
Dr.Alberti Technikhandel, Bad Neuenahr, Germany, electronics controllers, medicine & lab equipment: repair & service
the Beethoven-Orchester Bonn, Bonn, Germany, laptops: repair & service
BiBB (Bundesinstitut für Berufsbildung Bonn), Bonn, computers and laptops: repair & service
Diedenhofen Pharma, St.Augustin, Germany, computers and laptops: repair & service
Deutsche Welle DW Radio, Studio Bonn, Germany, audio-video equipment: repair & service
AIESEC e.V, Bonn, Germany, laptops and audio-video equipment: repair & service
Samuel Meffire, der Stadtkrieger, Bonn, Germany, Notebooks, laptops: repair & service
PAPAS, Naturstein GmbH, Bonn, Germany, electronicssystems & robots, network: repair & service
Logik Verlag, Köln, Germany, electronics controllers: invention & development
EUROPART Schlosserei, Ludwigsfelde, Germany, electronicscar controllers: repair & service
travel agency NewPlan, Bonn, Germany, consumer electronicssystems: repair & service
Annika's podology studio, Heidenau, Germany, laptops and audio-video equipment: repair & service
Wilkes podology studio, Bonn, Germany, electronics& electromechanic equipment: repair & service
Hugo Albers Elektrotechnik, Rheine, Germany, electronics controllers: repair & service
k-k-automotive, Meckenheim, Germany, electronicscar diagnosis & controllers: repair & service
Best Friends Bar and Restaurant, Bonn, Germany, electric and electronicssystems: repair & service
3886 records, Bonn, Germany, audio and laser equipment: repair & service
Schily Aluminiumveredelung, Erftstadt, Germany, electronics controllers: repair & service
Baetjer bath and heating systems, Hamburg, Germany, audio video system: repair & service

... and many more ...