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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 13978-2008
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Digital multimeters
Standard published on 19.8.2008
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GB/T 13979-2008
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Mass spectrometer leak detector
Standard published on 28.7.2008
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GB/T 13980-2008
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Density gauges utilizing ionizing radiation
Standard published on 2.7.2008
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GB/T 13981-2009
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Design general requirements for small wind turbine
Standard published on 13.4.2009
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GB/T 13982-2022
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Reflective and transmitting projection screens
Standard published on 12.10.2022
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GB/T 13983-1992
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Instruments--Vocabulary--Basic terms
Standard published on 17.12.1992
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GB/T 13984-2005
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Micrographics-Duplicating film,silver,diazo and vesicular-Visual density-Specifications and measurement
Standard published on 19.4.2005
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GB/T 13985-2008
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Operating force and strength of camera
Standard published on 2.7.2008
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GB/T 13987-2025
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Determination of flash guide numbers for electronic photoflash equipment
Standard published on 29.8.2025
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