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Standards GB - Chinese national standards - Page 348
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 13993.2-2014
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Optical fibre cables for telecommunication—Part 2: Outdoor optical fibre cables for core networks
Standard published on 5.12.2014
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GB/T 13993.3-2014
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Optical fiber cables for telecommunicationPart 3: Indoor optical fibre cables for generic cabling
Standard published on 5.12.2014
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GB/T 13993.4-2014
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Optical fibre cables for telecommunicationPart 4: Outdoor optical fibre cables for access networks
Standard published on 5.12.2014
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GB/T 13997-1999
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Technical requirement for 2048kbit/s8448kbit/s34368kbit/s139264kbit/s optical line terminals
Standard published on 2.8.1999
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GB/T 13999-1992
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Two-track photographic soundrecords on 35mm motion-picture prints--Positions and width dimensions
Standard published on 17.12.1992
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GB/T 14-2013
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Mushroom head square neck bolts
Standard published on 9.6.2013
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GB/Z 140-2025
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Cybersecurity aspects of devices used for power metering and monitoring,power quality monitoring,data collection and analysis
Standard published on 3.12.2025
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GB/T 1400-2014
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Chemical reagentHexamethylene tetramine
Standard published on 3.9.2014
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GB/T 14002-2008
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Terminology of work and personnel quota
Standard published on 23.4.2008
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GB 14003-2005
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Smoke detectors-Line detectors using an optical light beam
Standard published on 1.9.2005
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