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Standards GB - Chinese national standards - Page 204
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 12564-2008
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Generic specification for photomultiplier tubes
Standard published on 2.7.2008
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GB/T 12565-1990
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Semiconductor devices--Sectional specification for optoelectronic devices
Standard published on 12.12.1990
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GB/T 12566-1990
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Interface for signal chain of sound and television broadcasting transmitting equipments
Standard published on 7.12.1990
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GB 1257-2007
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Working chemical - Potassium hydrogen phthalate
Standard published on 25.10.2007
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GB/T 12571-1990
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Methods of measurement of monochrome display tubes
Standard published on 12.12.1990
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GB/T 12572-2008
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Universal requirements and measurement methods of parameters for radio transmitting equipment
Standard published on 30.6.2008
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GB/T 12573-2008
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Sampling method for cement
Standard published on 30.6.2008
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GB/T 12574-2023
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Determination of acid number in aviation turbine fuel
Standard published on 7.9.2023
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GB/T 12575-1990
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Liquid fuel oils--Determination of vanadium content--Flameless atomic absorption spectroscopic method
Standard published on 14.12.1990
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GB/T 12576-1997
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Liquified petroleum gases--Calculation of vapour pressure and relative density and octane number
Standard published on 16.6.1997
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