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Standards GB - Chinese national standards - Page 4654
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 46385.2-2025
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Optical circuit boards—Part 2: Basic test and measurement procedures—General guidance for definition of measurement conditions for optical characteristics
Standard published on 31.10.2025
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GB/T 46385.21-2025
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Optical circuit boards—Part 2-1: Basic test and measurement procedures—Optical attenuation and isolation measurements
Standard published on 31.10.2025
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GB/T 46385.22-2025
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Optical circuit boards—Part 2-2Basic test and measurement procedures—Dimensions measurements
Standard published on 31.10.2025
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GB/T 46385.24-2025
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Optical circuit boards—Part 2-4: Basic test and measurement procedures—Optical transmission test for optical circuit boards without input/output fibres
Standard published on 31.10.2025
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GB/T 46385.3-2026
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Optical circuit boards—Part 3: Performance—General and guidance
Execute Date: february 2027
Standard published on 30.7.2026
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GB/T 46385.4-2026
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Optical circuit boards—Part 4: Interface—General and guidance
Execute Date: february 2027
Standard published on 30.7.2026
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GB/T 46386.1-2025
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Plastics—Poly(butylene adipate terephthalate) (PBAT) moulding and extrusion materials—Part 1: Designation system and basis for classification
Standard published on 5.10.2025
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GB/T 46386.2-2025
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Plastics—Poly(butylene adipate terephthalate) (PBAT) moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties
Standard published on 5.10.2025
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GB/T 46387-2025
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Determination of the activity of chondroitinase
Standard published on 5.10.2025
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GB/T 46388.1-2025
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Sharps injury protection—Requirements and test methods—Part 1: Single-use sharps containers
Execute Date: november 2026
Standard published on 5.10.2025
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