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Standards GB - Chinese national standards - Page 75
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 10963.3-2016
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Circuit-breakers for overcurrent protection for household and similar installation—Part 3: Circuit-breakers for d.c. operation
Standard published on 25.4.2016
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GB/T 10963.3-2025
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Electrical accessories—Circuit-breakers for overcurrent protection for household and similar installations—Part 3: Circuit-breakers for DC operation
Execute Date: may 2026
Standard published on 31.10.2025
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GB/T 1097-2003
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Square and rectangular keys
Standard published on 29.4.2003
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GB/T 10973-2005
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Color paper processor
Standard published on 9.9.2005
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GB/T 10978.2-1989
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Lead acid batteriesfor special type explosion proof power unit in coal mine--Product types and specification
Standard published on 31.3.1989
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GB/T 1098-2003
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Woodruff keyways
Standard published on 5.6.2003
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GB/T 10985-1989
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Optical systems--Determination of distortion
Standard published on 10.3.1989
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GB/T 10987-2009
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Optical systems - Determination of parameters
Standard published on 30.9.2009
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GB/T 10988-2009
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Veiling glare of optical systems - Methods of measurement
Standard published on 30.9.2009
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GB/T 1099.1-2003
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Woodruff keys--Normal form
Standard published on 29.4.2003
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