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Standards GB - Chinese national standards - Page 535
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 15505-1995
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Water quality--Determination of selenium--Graphite furnace atomic absorption spectrometric method
Standard published on 19.1.1995
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GB/T 15508-1995
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Acoustics--Speech articulation testing method
Standard published on 15.3.1995
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GB/T 1551-2021
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Test method for measuring resistivity of monocrystal silicon—In-line four-point probe and direct current two-point probe method
Standard published on 21.5.2021
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GB/T 15510-2008
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General rules for reliability test of electromagnetic relay for control circuits
Standard published on 18.6.2008
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GB/T 15512-2009
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Technical guides for evaluating the saving of iron and steel product in enterprise
Standard published on 8.4.2009
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GB/T 15514-2021
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Codes for ports and other locations of the People""s Republic of China
Standard published on 11.10.2021
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GB/T 15515-2008
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Specifications of optical power meter
Standard published on 7.10.2008
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GB/T 15516-1995
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Air quality--Determination offormaldehyde--Acetylacetone spectrophotometric method
Standard published on 19.1.1995
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GB/T 15519-2002
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Chemical conversion coatings--Black oxide coating on iron and steel--Specification and test methods
Standard published on 16.4.2002
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GB/T 15524-1995
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Reliability requirements and testing methods for non-broadcast video tape recorders
Standard published on 6.4.1995
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