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Standards GB - Chinese national standards - Page 5205
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 7921-2008
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Uniform color space and color difference formula
Standard published on 26.6.2008
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GB/T 7922-2023
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Method of measuring color of light sources
Standard published on 23.5.2023
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GB/T 7925-2021
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NC reciprocating traveling type wire electrical-discharge machines—Parameters
Standard published on 21.5.2021
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GB/T 7926-2015
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NC reciprocating traveling type wire electrical-discharge machines—Testing of the accuracy
Standard published on 10.12.2015
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GB/T 7927-2007
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Method of vibration measurement for walking tractors
Standard published on 25.6.2007
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GB/T 7928-2025
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General technical specification for metro vehicles
Standard published on 31.10.2025
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GB/T 7930-2008
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Specifications for aerophotogrammetric office operation of 1:500 1:1 000 1:2 000 topographic maps
Standard published on 20.6.2008
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GB/T 7931-2008
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Specifications for aerophotogrammetric field work of 1:500 1:1 000 1:2 000 topographic maps
Standard published on 20.6.2008
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GB/T 7932-2017
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Pneumatic fluid power-General rules and safety requirements for systems and their components
Standard published on 12.7.2017
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GB/T 7934-2017
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Hydraulic two-port slip-in cartridge valves—Technical requirements
Standard published on 1.11.2017
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