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Standards GB - Chinese national standards - Page 7459
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 24578-2015
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Test method for measuring surface metal contamination on silicon wafers by total reflection X-Ray fluorescence spectroscopy
WITHDRAWN published on 10.12.2015
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GB 2458-1981
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Sulphur in powder form--Determination of sieved re- mains
WITHDRAWN published on 1.1.1981
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GB/T 24581-2009
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Test method for low temperature FT-IR analysis of single crystal silicon for - impurities
WITHDRAWN published on 30.10.2009
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GB/T 24582-2009
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Test method for measuring surface metal contamination of polycrystalline silicon by acid extraction-inductively coupled plasma mass spectrometry
WITHDRAWN published on 30.10.2009
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GB/T 24583.1-2009
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Vanadium-Nitrogen alloy—Determination of vanadium content—The ammonium ferrous sulfate titration method
WITHDRAWN published on 30.10.2009
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GB/T 24583.2-2009
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Vanadium—Nitrogen alloy—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas
WITHDRAWN published on 30.10.2009
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GB/T 24583.3-2009
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Vanadium-Nitrogen alloy-Determination of nitrogen content—The distillation-neutralization titration method
WITHDRAWN published on 30.10.2009
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GB/T 24583.4-2009
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Vanadium—Nitrogen alloy—Determination carbon of content—The infrared absorption method
WITHDRAWN published on 30.10.2009
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GB/T 24583.5-2009
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Vanadium-Nitrogen alloy—Determination of phosphorus content—The bismuth molybdenum blue spectrophotometry method
WITHDRAWN published on 30.10.2009
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GB/T 24583.6-2009
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Vanadium-Nitrogen alloy—Determination of sulfur content—The infrared absorption method
WITHDRAWN published on 30.10.2009
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