USA - Federal Communications Commission (FCC)

http://www.fcc.gov/

Food and Drug Association

http://www.fda.gov/

Underwriters Laboratories Inc. (UL)

http://www.ul.com/

CSA

http://www.csa-international.org/english/home/index.htm

IRAM

http://www.iram.com.ar/

COFETEL ( Comision Federal de Telecomunicaciones)

http://www.cft.gob.mx/index.html