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Standards GB - Chinese national standards - Page 117
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 11417.3-2025
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Ophthalmic optics—Contact lenses—Part 3:Soft contact lenses
Execute Date: november 2028
Standard published on 31.10.2025
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GB/T 11417.4-2012
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Ophthalmic optics - Contact lenses - Part 4 Saline solution for contact lens testing
Standard published on 31.12.2012
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GB/T 11417.5-2012
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Ophthalmic optics - Contact lenses - Part 5: Testing methods for optical properties
Standard published on 31.12.2012
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GB/T 11417.6-2012
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Ophthalmic optics - Contact lenses - Part 6: Mechanical properties test methods
Standard published on 31.12.2012
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GB/T 11417.7-2012
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Ophthalmic optics - Contact lenses - Part 7: Physicochemical properties test methods
Standard published on 31.12.2012
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GB/T 11417.8-2023
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Ophthalmic optics—Contact lenses—Part 8Determination of shelf-life
Standard published on 7.9.2023
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GB/T 11417.9-2012
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Ophthalmic optics - Contact lenses - Part 9: Ageing by exposure to UV and visible radiation (in vitro method)
Standard published on 31.12.2012
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GB/T 11418-1989
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Determination of resistance to heat of vitreous andporcelain enamels
Standard published on 8.6.1989
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GB/T 11419-2008
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Vitreous and porcelain enamels - Enamelled cooking utensils - Determination of resistance to thermal shock
Standard published on 23.12.2008
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GB/T 1142-2004
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Shell drills
Standard published on 10.2.2004
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