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Standards GB - Chinese national standards - Page 4844

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 47836.2-2026

Rubber and rubber products—Determination of biobased content—Part 2: Biobased carbon content
Execute Date: february 2027

Standard published on 2.7.2026

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GB/T 47836.3-2026

Rubber and rubber products—Determination of biobased content—Part 3: Biobased mass content
Execute Date: february 2027

Standard published on 2.7.2026

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GB/T 47837.4012-2026

Materials for printed circuit boards and other interconnecting structures—Part 4-12: Prepreg for multilayer printed circuit boards—Non-halogenated multifunctional epoxide woven E-glass prepreg
Execute Date: february 2027

Standard published on 2.7.2026

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electronic design (pdf) (ON REQUEST)

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GB/T 47837.4016-2026

Materials for printed circuit boards and other interconnecting structures—Part 4-16: Prepreg for multilayer printed circuit boards—Non-halogenated multifunctional epoxide woven E-glass prepreg for lead-free assembly
Execute Date: february 2027

Standard published on 2.7.2026

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electronic design (pdf) (ON REQUEST)

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GB/T 47837.4017-2026

Materials for printed circuit boards and other interconnecting structures—Part 4-17: Prepreg for multilayer printed circuit boards—Non-halogenated epoxide woven E-glass prepreg for lead-free assembly
Execute Date: february 2027

Standard published on 2.7.2026

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electronic design (pdf) (ON REQUEST)

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GB/T 47838.1-2026

Technical guide for operational condition assessment of hydraulic turbine and generator sets—Part 1: General
Execute Date: february 2027

Standard published on 2.7.2026

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