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Standards GB - Chinese national standards - Page 8393
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 6276.9-1986
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Ammonium hydrogen carbonate for industrial use—Determination of heavy metal content—Visible tarbidimetric method
WITHDRAWN published on 18.4.1986
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GB/T 6276.9-2010
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Determination of ammonium hydrogen carbonate for industrial use—Part 9:Heavy metal content—Visible turbidimetric method
WITHDRAWN published on 30.6.2010
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GB/T 6277-1986
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Methods of measurement for television transmitters
WITHDRAWN published on 16.4.1986
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GB/T 6278-1986
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Simulated programme signal
WITHDRAWN published on 15.4.1986
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GB 6279-1986
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WITHDRAWN published on 1.1.1986
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GB/T 628-1993
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Chemical reagent—Boric acid
WITHDRAWN published on 1.3.1993
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GB 6280-1986
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Capacity series and frequency channels arrangement in 25 to 1000MHz land mobile telecommunication network
WITHDRAWN published on 14.4.1986
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GB/T 6282-1986
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Interface parameters of the 25 to 1000MHz land mobile telecommunication network connecting to public telecommunication network through subscriber lines
WITHDRAWN published on 14.4.1986
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GB/T 6283-1986
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Chemical products—Determination of water—Karl fischer method (general method)
WITHDRAWN published on 18.4.1986
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GB/T 6284-1986
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Chemical products for industrial use—General method for determination of water content—Gravimetric method
WITHDRAWN published on 18.4.1986
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