PANTRAC
http://www.pantrac.com/
SGL CARBON GROUP
http://www.sglcarbon.com.br/espanhol/latina.htm#mexico
HELWIG CARBON
http://www.helwigcarbon.com
INDUMINER S.A.C. - El Juncal N° 0161-B Portezuelo de Quilicura - Santiago - Chile
Desarrollo: