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Standards GB - Chinese national standards - Page 4737
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 4949-2026
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Chemical analysis methods for sacrificial anode of Al-Zn-In system alloy
Execute Date: august 2026
Standard published on 28.1.2026
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GB/T 4950-2021
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Sacrificial anode of zinc alloy
Standard published on 20.8.2021
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GB/T 4955-2005
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Metallic coatings -- Measurement of coating thickness -- Coulometric method by anodic dissolution
Standard published on 12.10.2005
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GB/T 4956-2025
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Non-magnetic coatings on magnetic substrates—Measurement of coating thickness—Magnetic method
Standard published on 31.10.2025
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GB/T 4957-2025
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Non-conductive coatings on non-magnetic electrically conductive base metals—Measurement of coating thickness—Amplitude-sensitive eddy-current method
Standard published on 31.10.2025
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GB/T 4959-2011
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Methods of measurement for the characteristics of sound reinforcement in auditoria
Standard published on 31.10.2011
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GB/T 4959-2026
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Methods of measurement for the characteristics of sound reinforcement in auditoria
Execute Date: october 2026
Standard published on 31.3.2026
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GB/T 4960.1-2010
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Glossary of terms - nuclear science and technology - part 1: Nuclear physics and nuclear chemistry
Standard published on 10.11.2010
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GB/T 4960.2-2023
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Glossary for nuclear science and technology—Part 2Fission reactor
Standard published on 27.11.2023
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GB/T 4960.3-2010
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Glossary of terms - nuclear science and technology - Part 3: Nuclear fuel and nuclear fuel cycle
Standard published on 10.11.2010
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