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Professional Standard - Post and Telecommunication, ?? ??

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ??

Institute of Electrical and Electronics Engineers (IEEE), ?? ??

Group Standards of the People's Republic of China, ?? ??

British Standards Institution (BSI), ?? ??

中國人民銀行, ?? ??

International Telecommunication Union (ITU), ?? ??

Japanese Industrial Standards Committee (JISC), ?? ??





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