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Standards GB - Chinese national standards - Page 8606
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 7578-1987
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Detail specification for electronic component--Case-rated bipolar transistor for types 3DA150B, 3DA150C for high-frequency amplification
WITHDRAWN published on 1.1.1987
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GB 7579-1987
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Detail specification for electronic component--Case-rated bipolar transistor for type 3DD201 for low-frequency amplification
WITHDRAWN published on 1.1.1987
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GB 7580-1987
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Detail specification for electronic components--Case-rated bipolar transistors for low-frequency amplification, type 3DD102B
WITHDRAWN published on 1.1.1987
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GB/T 7582-1987
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Acoustics—Threshold of hearing by air conduction as a function of age and sex for otologically normal persons
WITHDRAWN published on 27.3.1987
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GB/T 7582-2004
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Acoustics--Statistical distribution of hearing thresholds as a function of age
WITHDRAWN published on 13.5.2004
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GB/T 7584-1987
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Acoustics—Measurement of sound attenuation of hearing protectors—Subjective method
WITHDRAWN published on 27.3.1987
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GB/T 7585-1987
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Capacity series and radio-frequency channel arrangement for analog microwave relay systems
WITHDRAWN published on 27.3.1987
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GB 7586-1987
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Testing method of hydraulic excavators
WITHDRAWN published on 1.1.1987
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GB/T 7586-1996
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Testing method of hydraulic excavators
WITHDRAWN published on 5.4.1996
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GB/T 7586-2008
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Hydraulic excavators—Test methods
WITHDRAWN published on 26.8.2008
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