CEN is an association that brings together the National Standardization Bodies of 34 European countries.CEN provides a platform for the development of European Standards and other technical documents in relation to various kinds of products, materials, services and processes.
CENELECis an association that brings together the National Electrotechnical Committees of 34 European countries
It prepares voluntary standards in the electrotechnical field, which help facilitate trade between countries, create new markets, cut compliance costs and support the development of a Single European Market.
ETSI provides members with an open, inclusive and collaborative environment. This environment supports the timely development, ratification and testing of globally applicable standards for ICT-enabled systems, applications and services.
The IEC brings together more than 170 countries and provides a global, neutral and independent standardization platform to 20 000 experts globally. It administers 4 Conformity assessment systems whose members certify that devices, systems, installations, services and people work as required.