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GB - Chinese national standards - Page 4630

Standards GB - Chinese national standards - Page 4630

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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Preview GB/T 46131-2025 29.8.2025
GB/T 46131-2025

Technical requirements and test methods for tap-changer for ultra high voltage transformers

Standard published on 29.8.2025

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in 6 working days
Preview GB/T 46132-2025 29.8.2025
GB/T 46132-2025

Space environment—Test method of space radiation effects for space materials

Standard published on 29.8.2025

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430.80 USD


in 4 working days
Preview GB/T 46133-2025 29.8.2025
GB/T 46133-2025

General rule for determination of nitrogen content by Dumas combustion method

Standard published on 29.8.2025

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in 3 working days
Preview GB/T 46134-2025 29.8.2025
GB/T 46134-2025

Natural esters—Guidelines for maintenance and use in electrical equipment

Standard published on 29.8.2025

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814.80 USD


in 5 working days
Preview GB/T 46135.1-2025 5.10.2025
GB/T 46135.1-2025

Test methods for organic luminescence electronic and hole function material—Part 1Thermal property

Standard published on 5.10.2025

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238.80 USD


in 3 working days
Preview GB/T 46135.2-2025 5.10.2025
GB/T 46135.2-2025

Test methods for organic luminescence electronic and hole functional material—Part 2: Optical properties

Standard published on 5.10.2025

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Preview GB/T 46135.3-2025 5.10.2025
GB/T 46135.3-2025

Test methods for organic luminescence electronic and hole function material—Part 3Purity

Standard published on 5.10.2025

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Preview GB/T 46136-2025 29.8.2025
GB/T 46136-2025

Chemicals—Determining anaerobic transformation test in liquid manure

Standard published on 29.8.2025

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Preview GB/T 46137-2025 29.8.2025
GB/T 46137-2025

Classification for solar activity level

Standard published on 29.8.2025

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238.80 USD


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Preview GB/T 46138-2025 29.8.2025
GB/T 46138-2025

Grade of geomagnetic activity

Standard published on 29.8.2025

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