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Standards GB - Chinese national standards - Page 7447
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 8432-1987
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Humidity test control for color fastness to light
WITHDRAWN published on 22.12.1987
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GB/T 8433-1998
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Textiles—Tests for color fastness—Color fastness to chlorinated water(Swimming-pool water)
WITHDRAWN published on 26.11.1998
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GB/T 8434-1998
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Textiles—Tests for color fastness—Color fastness to milling:Alkaline milling
WITHDRAWN published on 26.11.1998
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GB/T 8441-1998
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Textiles—Tests for color fastness—Color fastness to chlorination
WITHDRAWN published on 26.11.1998
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GB/T 8445-1987
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Conventions concerning electric and magnetic circuits
WITHDRAWN published on 17.12.1987
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GB/T 8446.1-1987
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Heat sink for power semiconductor device
WITHDRAWN published on 19.12.1987
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GB/T 8446.1-2004
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Heat sink for power semiconductor device—Part 1:Casting kind series
WITHDRAWN published on 4.2.2004
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GB/T 8446.2-1987
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Measuring method of thermal resistance and input fluid-output fluid pressure difference of heat sink for power semiconductor device
WITHDRAWN published on 19.12.1987
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GB/T 8446.2-2004
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Heat sink for power semiconductor device—Part 2:Measuring method of thermal resistance and input fluid-output fluid pressure difference
WITHDRAWN published on 4.2.2004
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GB/T 8446.3-1988
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Insulators and fasteners for heat sink for power semiconductor device
WITHDRAWN published on 22.12.1988
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