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Standards GB - Chinese national standards - Page 4568

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 45642-2025

Guidelines on pest risk management for international movement of seeds

Standard published on 30.5.2025

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GB/T 45643-2025

Determination of isothiazolinone compounds in feeds—Liquid chromatography-tandem mass spectrometry

Standard published on 30.5.2025

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GB/T 45644-2025

Test method for resistance against surface and traffic loading of the thermoplastics inspection chamber

Standard published on 25.4.2025

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GB/T 45645.1-2025

Technical guidelines for in-depth investigation of road traffic accidents—Part 1 General principles

Standard published on 30.5.2025

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GB/T 45646-2025

Greenhouse gases—The quantification method and requirement for carbon footprint of products—Internal combustion engines

Standard published on 25.4.2025

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GB/T 45647-2025

Technical specification for carbon dioxide recovery and disposal in metallurgical lime kiln

Standard published on 25.4.2025

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GB/T 45648.1-2025

Technical specification of energy absorption device for high voltage direct current (HVDC) power transmission—Part 1: DC controllable and self-recovery energy absorption device

Standard published on 25.4.2025

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GB/T 45648.2-2025

Technical specification of energy absorption device for high voltage direct current (HVDC) power transmission—Part 2: AC controllable and self-recovery energy absorption device

Standard published on 25.4.2025

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GB/T 45649-2025

Technical guidelines for the application of coaxial turbine units in metallurgical waste heat and pressure energy recovery

Standard published on 25.4.2025

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