Contacto:
Allemania                                                                                                                                                                                                                                 
Micro Trace Minerals GmbH
Röhrenstr. 20
D-91217 Hersbruck
Tel. +49 (0)9151-4332
Fax +49 (0)9151-2306
 
USA
P.O.Box 4613
Boulder, Co 80306-4613
 
E-mail: Contacto MTM