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Standards GB - Chinese national standards - Page 4211
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 42902-2023
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Test method for surface defects on silicon carbide epitaxial wafers—Laser scattering method
Standard published on 6.8.2023
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GB/T 42903-2023
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Metallic materials—Testing methods for creep crack and creep-fatigue crack growth rates
Standard published on 6.8.2023
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GB/T 42904-2023
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Corrosion of metals and alloys—Corrosion test of flowing water in seawater pipeline
Standard published on 6.8.2023
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GB/T 42905-2023
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Test method for thickness of silicon carbide epitaxial layer—Infrared reflectance method
Standard published on 6.8.2023
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GB/T 42906-2023
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Graphite materials—Test method for equivalent boron contents—Inductively coupled plasma atomic emission spectrometry
Standard published on 6.8.2023
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GB/T 42907-2023
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Test method for excess-charge-carrier recombination lifetime in silicon ingots, silicon bricks and silicon wafers—Noncontact eddy-current sensor
Standard published on 6.8.2023
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GB/T 42908-2023
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Determination of organic halogen content in textile dyeing and finishing auxiliaries
Standard published on 6.8.2023
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GB/T 42909-2023
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Electrically conductive adhesive tape for wireless terminal equipment application
Standard published on 6.8.2023
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GB/T 4291-2017
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Synthetic cryolite
Standard published on 12.7.2017
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GB/T 4291-2017E
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Synthetic cryolite
Standard published on 12.7.2017
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