GB/T 26257-2010

The requirements of hearing aids compatibility and measurement methods for telephone handset

NORM herausgegeben am 14.1.2011

English, Chinesisch -
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The information about the standard:

Designation standards: GB/T 26257-2010
Publication date standards: 14.1.2011
Country: Chinese technical standard
Kategorie: Technische Normen GB