Candian Standards Association - http://www.csa-international.org

Comité Européen de Normalisation Electrotechnique - http://www.cenelec.be

IEC Central Office - http://www.iec.ch/home-e.htm

Underwriters Laboratories, Inc - http://www.ul.com

TÜV Rheinland of North America, Inc - http://www.us.tuv.com

TÜV Rheinland Brasil - www.tuvbrasil.com.br

União Certificadora - www.uciee.org

Inmetro - www.inmetro.gov.br

BVQI - www.bvqi.com.br