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Standards GB - Chinese national standards - Page 179
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 12267-1990
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Marine navigational equipment--General requirements--Methods of testing and required test results
Standard published on 15.3.1990
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GB 12268-2025
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List of dangerous goods
Standard published on 28.3.2025
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GB/T 1227-2017
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Accurate pressure gauge
Standard published on 29.12.2017
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GB/T 12272-1990
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Measuring method of radio-frequency high potential withstanding voltage for radio-frequency coaxial connectors
Standard published on 15.3.1990
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GB/T 12273.1-2017
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Quartz crystal units of assessed quality—Part 1:Generic specification
Standard published on 31.5.2017
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GB/T 12273.501-2012
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Quartz crystal units A specification in the quality assessment system for electronic components Part 5.1: Blank detail specification- qualification approval
Standard published on 5.11.2012
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GB/T 12274.1-2012
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Quartz crystal controlled oscillators of assessed quality - Part 1: Generic specification
Standard published on 5.11.2012
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GB/T 12274.4-2021
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Quartz crystal controlled oscillators of assessed quality—Part 4: Sectional specification—Capability approval
Standard published on 11.10.2021
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GB/T 12274.401-2023
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Quartz crystal controlled oscillators of assessed quality—Part 4-1: Blank detail specification—Capability approval
Standard published on 6.8.2023
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GB/T 12275-1990
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The rule of type designation for quartz crystal oscillators
Standard published on 15.3.1990
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