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Standards GB - Chinese national standards - Page 4818

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 47551-2026

Plastics—Limit requirements for hazardous substances—Polybrominated biphenyls and polybrominated diphenyl ethers

Standard published on 30.4.2026

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GB/T 47552-2026

Fine ceramics—Chemical analysis methods of barium titanate powders

Standard published on 30.4.2026

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GB/T 47553-2026

Calculation method of energy balance value for glass in building

Standard published on 30.4.2026

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GB/T 47554.1-2026

Corrosion of metals and alloys—Corrosion and fouling in industrial cooling water systems—Part 1: Guidelines and requirements for conducting pilot-scale evaluation of corrosion and fouling control additives for open recirculating cooling water systems

Standard published on 30.4.2026

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GB/T 47554.2-2026

Corrosion of metals and alloys—Corrosion and fouling in industrial cooling water systems—Part 2: Evaluation of the performance of cooling water treatment programmes using a pilot-scale test rig

Standard published on 30.4.2026

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GB/T 47555-2026

Wind energy generation systems—General technical specification for green demolition of wind turbines

Standard published on 30.4.2026

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