Standards GB - Chinese national standards - Page 1077

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 19042.5-2022

Evaluation and routine testing in medical imaging departments—Part 3-5:X-ray computed tomography equipment imaging performance acceptance test and constancy test

Standard published on 12.10.2022

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GB/T 19042.6-2023

Evaluation and routine testing in medical imaging departments—Part 3-6: mammographic X-ray equipment used in a mammographic tomosynthesis mode of operation imaging performance acceptance and constancy tests

Standard published on 27.11.2023

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GB/T 19042.7-2025

Evaluation and routine testing in medical imaging departments—Part 3-7X-ray equipment for dental cone beam computed tomography imaging performance acceptance and constancy tests
Execute Date: january 2027

Standard published on 2.12.2025

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GB 19044-2022

Minimum allowable values of energy efficiency and energy efficiency grades of fluorescent lamps for general lighting

Standard published on 29.12.2022

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