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Standards GB - Chinese national standards - Page 603
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 16399-2021
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Methods for chemical analysis of clay
Standard published on 11.10.2021
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GB/Z 164-2025
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Ageing societies—Home healthcare products, related services and environments—Accessibility and usability guidelines
Standard published on 3.12.2025
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GB/T 16400-2023
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Aluminosilicate wool and it""s products for thermal insulation
Standard published on 7.9.2023
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GB/T 16402-1996
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Acoustics--Reference equivalent threshold sound pressure levels for pure tones and insert earphones
Standard published on 27.5.1996
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GB/T 16404-1996
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Acoustics--Determination of sound power levels of noise sources using sound intensity--Part 1:Measurement at discrete points
Standard published on 27.5.1996
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GB/T 16404.2-1999
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Acoustics--Determination of sound power levels of noise sources using sound intensity--Part 2:Measurement by scanning
Standard published on 8.3.1999
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GB/T 16404.3-2006
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Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 3: Precision method for measurement by scanning
Standard published on 8.5.2006
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GB/T 16405-2025
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Acoustics—Measurement of insertion loss of ducted silencers without flow—Laboratory survey method
Standard published on 30.5.2025
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GB/T 16406-1996
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Acoustics--Flexural resonancetesting method for damping properties of acoustical materials
Standard published on 27.5.1996
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GB/T 16407-2006
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AcousticsCharacteristics and measurements of field of Pressure pulse lithotripters
Standard published on 25.7.2006
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