Contacts

 Our basic coordinates:

THUM + MAHR GmbH
Heinrich-Hertz-Str. 1-3
D-40789 Monheim am Rhein
Deutschland

Registered in Germany: Local District Court Düsseldorf HRB 45259
VAT Registration No: DE 121 39 36 58

Tel:    +49 - 2173 - 967 - 30    (switchboard)
Fax:   +49 - 2173 - 967 - 400   (switchboard)
Mail:   info@thummahr.de
Web:  www.thummahr.de

A hotline to our staff with direct-dialling to telephone extensions, Fax extensions, and e-mail addresses:

 Executive Management   
Christina Opitz  Coordinator 312  copitz@thummahr.de     
Directfax 400
Hanno Mahr CEO 314    hmahr@thummahr.de 
Peter Thum   CFO 313  pthum@thummahr.de 
Stefan Mertens COO 322 smertens@thummahr.de
Liberata Goelke Authorized 338 lgoelke@thummahr.de
Signatory
    
 Distribution   
Marianne Mahr Coordinator 321 mmahr@thummahr.de
Directfax 401
    
 Audio Systems Engineering (AST)  
Angelika Piechotta-Lotz Coordinator 343 apiechotta@thummahr.de
Directfax 404
Bernd Steinhoff  Teamleader 339 bsteinhoff@thummahr.de  
Heiner Spilker-Plettau Project Manager 332

hspilker@thummahr.de

Lothar Maag Project Manager 331 lmaag@thummahr.de 
Thomas Brinkhoff Project Manager 330  tbrinkhoff@thummahr.de 
Dirk Kästner Design Engineer 318 dkaestner@thummahr.de
  
 Information Technology  (IT)  
    
Hanne Joneitis Coordinator 341 hjoneitis@thummahr.de 
Directfax ---
Tobias Olbertz  Teamleader 335

tolbertz@thummahr.de

B. Geltenpoth   Project Manager 328  bgeltenpoth@thummahr.de
Axel Büchel  Project Manager 326 abuechel@thummahr.de 
Boris Raskob Project Manager 342 braskob@thummahr.de
 Planning and Installation (MOST)
Claus Knefelkamp Teamleader 329 cknefelkamp@thummahr.de
 Research + Development (R+D)
Helmut v Aaken Teamleader 327 hvaaken@thummahr.de



 Service + Maintenance
Helmut v Aaken Service 327

    hvaaken@thummahr.de    


 

 Yellowtec Product Group
Michael Bartsch

Sales Director

315 mbartsch@thummahr.de
Reinhard Gallos Product Manager 360 rgallos@thummahr.de
 Advertising + Marketing
Christina Opitz Coordinator 312 copitz@thummahr.de
 Purchasing and Resource Planning
Eva Schlößer Coordinator 320 eschloesser@thummahr.de
Anja Simon Assistant 347 asimon@thummahr.de
Manfred Holitzner Warehouse 317 mholitzner@thummahr.de
 Bookkeeping
M. Ambrosch Accounting 316 mambrosch@thummahr.de
Marion Fiedler Accounting 316 mfiedler@thummahr.de