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Standards GB - Chinese national standards - Page 5347
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 9771.3-2020
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Single-mode optical fibres for telecommunication—Part 3: Characteristics of an extended wavelength band dispersion unshifted single-mode optical fibre
Standard published on 2.6.2020
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GB/T 9771.4-2020
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Single-mode optical fibres for telecommunication—Part 4: Characteristics of a dispersion shifted single-mode optical fibre
Standard published on 2.6.2020
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GB/T 9771.5-2020
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Single-mode optical fibres for telecommunication—Part 5: Characteristics of a non-zero dispersion shifted single-mode optical fibre
Standard published on 2.6.2020
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GB/T 9771.6-2020
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Single-mode optical fibres for telecommunication—Part 6: Characteristics of a fibre with non-zero dispersion for wideband optical transport
Standard published on 2.6.2020
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GB/T 9771.7-2022
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Single-mode optical fibres for telecommunication—Part 7: Characteristics of a bending loss insensitive single-mode optical fibre
Standard published on 12.10.2022
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GB/T 9772-2009
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Fiber cement corrugated sheets and ridge tile
Standard published on 9.3.2009
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GB/T 9774-2020
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Sacks for packing cement
Standard published on 29.9.2020
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GB/T 9775-2025
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Gypsum plasterboard
Standard published on 30.6.2025
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GB/T 9776-2022
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Calcined gypsum
Standard published on 30.12.2022
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GB/T 9779-2015
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Multi-layer coatings for architecture
Standard published on 11.9.2015
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