Standards GB - Chinese national standards - Page 5979

Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level. Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document

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GB/T 13994-1992 WITHDRAWN

Technical requirements for a 60-channel PCM/ADPCM transcoder equipment

WITHDRAWN published on 19.12.1992

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GB/T 13995-1992 WITHDRAWN

Technical requirements for TDM/FDM 60-channel transmultiplexing equipment

WITHDRAWN published on 16.12.1992

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GB/T 13996-1992 WITHDRAWN

Technical specification for digital line systems on optical fibre cables

WITHDRAWN published on 19.12.1992

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GB/T 13998-1992 WITHDRAWN

Measuring methods of the magnetic induced longitudinal EMF, magnetic induced voltage with respect to earth, electric induced current and psophometric voltage on telecommunication lines

WITHDRAWN published on 19.12.1992

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