http://www.ceiuni.it/ »
    CEI – Comitato Elettrotecnico Italiano

http://www.unicei.it/ »
    Ente Nazionale Italiano di Unificazione

http://www.dnv.com »
    DNV - Det Norske Veritas (Norway)

http://www.bsi-global.com/ »
    British Standards Institution (UK)

http://www.aenor.fr/ »
    Asociación Española de Normalización Certificación (Spain)

http://www.afnor.fr/ »
    Association Française de Normalisation (France)

http://www.bec-ceb.be/ »
    Comité Electrotecnique Belge (Belgium)

http://www.cenorm.be/ »
    Comitato Europeo di Normalizzazione (Belgium)

http://www.cenelec.be/ »
    Comitato Europeo di Normalizzazione Elettrotecnica (Belgium)

http://www.csni.cz/ »
    Czech Standards Institute (Check Republic)

http://din.de/ »
    Deutsches Institut für Normung e. V. (Germany)

http://www.vde.de/ »
    German Electrotechnical Commission of DIN and VDE (Germany)

http://www.elot.gr/ »
    Hellenic Organization for Standardization (Greece)

http://www.etsi.org/ »
    European Telecommunications Standardization - Institute (France)

http://www.nni.nl/ »
    Nederlands Normalisatie-Instituut - Centrum van Normalisatie (Holland)

http://www.nsai.ie/ »
    National Standards Authority of Ireland (Ireland)

http://www.nsf.com/ »
    Norges Standardiseringsforbund (Norway)

http://www.on-norm.at/ »
    Österreichisches Normungsinstitut (Austria)

http://www.sesko.fi/ »
    Finnish Electrotechnical Standards Association (Finland)

http://www.sekom.se/ »
    Svenska Elektriska Kommissionen (Sweden)

http://www.sfs.fi/ »
    Finnish Standards Association (Finland)

http://www.snv.ch/ »
    Swiss Association for Standardization (Switzerland)

http://www.stri.is/ »
    Icelandic Council for Standardization (Iceland)

http://www.ute-fr.com/ »
    Union Technique de l'Electricité (France)

http://www.standard.no/ »
    Norsk Elektroteknisk Komite (Norway)

http://www.iec.ch/ »
    International Electrotechnical Commission (Switzerland)

http://www.iso.ch/ »
    International Organization for Standardization (Switzerland)

http://www.ansi.org/ »
    American National Standard Institute (USA)

http://www.csa.ca/ »
    Canadian Standard Association (Canada)

http://www.iram.com.ar/ »
    Instituto Argentino de Normalizacion (Argentina)

http://www.jsa.or.jp/ »
    Japanese Industrial Standards (Japan)

http://www.psb.gov.sg/ »
    Singapore Productivity and Standards Board (Singapore)

http://www.standards.com.au/ »
    Standard Association of Australia (Australia)

http://www.tse.org.tr/ »
    Turkish Standard Institution (Turkey)

http://www.iso.co.il/sii/ »
    The Standards Institution of Israel (Israel)