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Standards GB - Chinese national standards - Page 5518
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 11198.4-1989
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Sulphuric acid for industrial use--Determination of iron content--Atomic absorption spectroscopy
WITHDRAWN published on 11.3.1989
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GB/T 11198.5-1989
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Sulphuric acid for industrial use--Determination of arsenic content--Silver diethyldithiocarbamate photometric method
WITHDRAWN published on 11.3.1989
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GB/T 11198.6-1989
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Sulphuric acid for industrial use--Determination of arsenic content--Gutzeit method
WITHDRAWN published on 11.3.1989
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GB/T 11198.7-1989
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Sulphuric acid for industrial use--Determination of lead content--Dithizone photometric method
WITHDRAWN published on 11.3.1989
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GB/T 11198.8-1989
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Sulphuric acid for industrial use--Determination of lead content--Atomic absorption spectroscopy
WITHDRAWN published on 11.3.1989
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GB/T 11198.9-1989
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Sulphuric acid for industrial use--Determination of mercury content--Dithizone photometric method
WITHDRAWN published on 11.3.1989
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GB/T 11199-1989
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Membrane process sodium hydroxide
WITHDRAWN published on 24.2.1989
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GB/T 11199-2006
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High-purity sodium hydroxide
WITHDRAWN published on 14.9.2006
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GBN 112-1981
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WITHDRAWN published on 1.1.1981
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GBJ 112-1987
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Technical specifications for construction ground in expanding soil areas
WITHDRAWN published on 12.11.1987
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