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Standards GB - Chinese national standards - Page 6232
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 1550-1997
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Standard methods for measuring conductivity type of extrinsic semiconducting materials
WITHDRAWN published on 3.6.1997
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GB/T 15500-1995
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Methods of random sampling by utilizing electronic sampler of random number
WITHDRAWN published on 4.1.1995
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GB/T 15506-1995
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Water quality--Determination of barium--Atomic absorption spectrometry
WITHDRAWN published on 19.1.1995
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GB/T 15507-1995
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Water quality--Determination of hydrazine--p-Dimetylaminobenzaldehyde spectrophotometric method
WITHDRAWN published on 19.1.1995
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GB/T 15509-1995
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Series and products for semiconductor integrated circuits—Products of robot series for Color TV
WITHDRAWN published on 15.3.1995
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GB 1551-1979
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WITHDRAWN published on 1.1.1979
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GB/T 1551-1995
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Test method for resistivity of silicon and germanium bars using a two-point probe
WITHDRAWN published on 18.4.1995
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GB/T 1551-2009
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Test method for measuring resistivity of monocrystal silicon
WITHDRAWN published on 30.10.2009
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GB/T 15510-1995
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General rules for reliability test of electromagnetic relay for control circuits
WITHDRAWN published on 16.3.1995
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GB/T 15511-1995
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General requirements for electrical automatic control systems of sea-going ships
WITHDRAWN published on 16.3.1995
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