ISO (International Organization for Standardization) is an international federation of national standards bodies (ISO member organizations). International level preparation work is usually carried out by ISO technical committees. Each member organization is interested in the matter where the technical committee is set up and is entitled to be represented on that committee. International organizations, both government and non-governmental organizations, in conjunction with ISO, are also engaged in the work. The ISO cooperates closely with the International Electrotechnical Commission (IEC) on all issues of electrotechnical standardization