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Standards GB - Chinese national standards - Page 6045
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 13986-1992
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Photoelectric method for measuring exposure in focal planes of camera
WITHDRAWN published on 19.12.1992
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GB/T 13987-1992
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Determination of flash guide numbers for electronic photoflash equipment
WITHDRAWN published on 19.12.1992
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GB/T 13988-1992
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Types and dimensions for connectors of electronic photoflash equipment to synchro-cord
WITHDRAWN published on 19.12.1992
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GB/T 13989-1992
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Subdivision and numbering for the national primary scale topographic maps
WITHDRAWN published on 17.12.1992
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GB 1399-1978
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WITHDRAWN published on 1.1.1978
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GB/T 13990-1992
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Specifications for aerophotogrammetric office operation 1:5000, 1:10000 topographic maps
WITHDRAWN published on 17.12.1992
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GB/T 13991-1992
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Stereocomparator
WITHDRAWN published on 17.12.1992
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GB/T 13992-1992
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Resistance strain gauge
WITHDRAWN published on 25.12.1992
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GB/T 13993.1-1992
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The series of optical fibre cables for telecommunication--General
WITHDRAWN published on 19.12.1992
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GB/T 13993.1-2004
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The series of optical fibre cables for telecommunication—Part 1:General
WITHDRAWN published on 15.3.2004
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