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Standards GB - Chinese national standards - Page 102
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 11295-1989
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Designation for laser crystal rods
Standard published on 31.3.1989
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GB/T 11296-1989
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Designation for infrared detecting materials
Standard published on 31.3.1989
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GB/T 11297.1-2017
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Test method for wavefront distortion of laser rods
Standard published on 31.5.2017
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GB/T 11297.10-2015
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Test method for Curie temperature of pyroelectric materials
Standard published on 31.12.2015
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GB/T 11297.11-2015
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Test method for dielectric constant of pyroelectric materials
Standard published on 31.12.2015
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GB/T 11297.12-2012
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Test method for extinction ratio of optical crystal
Standard published on 31.12.2012
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GB/T 11297.3-2002
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Test method for extinction ratio of NdYAG laser rods
Standard published on 4.12.2002
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GB/T 11297.6-1989
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Standard method for showing and measuring dislocation etch pits in Indium Antimonide single crystal
Standard published on 31.3.1989
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GB/T 11297.7-1989
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Test method for resistivity and Hall coefficient in InSb single crystals
Standard published on 31.3.1989
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GB/T 11297.8-2015
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Test method for pyroelectric coefficient of pyroelectric materials
Standard published on 31.12.2015
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