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American National Standards Institute (ANSI)
American Society for testing and Materials (ASTM)
Comitato Elettrotecnico Italiano (CEI)
Deutsches Institut Für Normung E.V. (DIN)
Dansk Standards/Information Technology (DS/IT)
European Committee for Standardization (CEN)
European Telecommunications Standards Institute (ETSI)
Finnish Standards Association (SFS)
Hellenic Organization Standardization (ELOT)
Instituto Argentino de Racionalizacion de Materiales (IRAM)
Instituto Português da Qualidade (IPQ)