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Standards GB - Chinese national standards - Page 359
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 1406.2-2008
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Types and dimentions of lamp caps - Part 2Pin lamp caps
Standard published on 29.4.2008
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GB/T 1406.3-2025
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Types and dimensions of lamp caps—Part 3Prefocus caps
Standard published on 28.2.2025
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GB/T 1406.4-2008
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Types and dimensions of lamp caps - Part 4: Miscellaneous caps
Standard published on 29.4.2008
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GB/T 1406.5-2008
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Types and dimensions of lamp caps - Part 5Bayonet caps
Standard published on 29.4.2008
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GB/T 14070-1993
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Gas analysis--Preparation of calibration gas mixtures--Manometric method
Standard published on 11.1.1993
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GB/T 14071-2025
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Specification for examination and approval of variety of forest tree
Standard published on 29.8.2025
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GB/T 14072-1993
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Conservation principle and method of germplasm resources of forest trees
Standard published on 4.2.1993
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GB/T 14074-2017
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Testing methods for wood adhesives and resins
Standard published on 29.12.2017
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GB/T 14075-2008
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Specifications for optical fibre chromatic dispersion measuring set
Standard published on 7.10.2008
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GB/T 14077-1993
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Measurement specification for birefractance crystal and polarizer
Standard published on 6.2.1993
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