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Standards GB - Chinese national standards - Page 64
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 10807-2006
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Flexible cellular polymeric materials - Determination of hardness (indentation technique)
Standard published on 31.3.2006
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GB/T 10808-2006
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Flexible cellular polymeric materials - Determination of tear strength
Standard published on 31.3.2006
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GB 10810.1-2005
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Uncut finished Spectacle lenses Part1:Single-vision and multifocal lenses
Standard published on 17.11.2005
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GB/T 10810.1-2025
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Uncut finished spectacle lenses—Part 1: Single-vision and multifocal
Standard published on 28.2.2025
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GB 10810.2-2006
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Uncut finished spectacle lenses - Part 2: Progressive power spectacle lenses
Standard published on 4.9.2006
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GB/T 10810.2-2025
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Uncut finished spectacle lenses—Part 2: Power-variation
Standard published on 28.2.2025
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GB 10810.3-2006
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Spectacle lenses and related eye wearTransmittance specifications and test methods
Standard published on 31.3.2006
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GB/T 10810.3-2025
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Uncut finished spectacle lenses—Part 3:Transmittance test methods
Standard published on 28.2.2025
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GB 10810.4-2012
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Uncut finished spectacle lenses - Part 4: Specifications and test methods for anti-reflective coatings
Standard published on 5.11.2012
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GB/T 10810.4-2025
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Uncut finished spectacle lenses—Part 4:Anti-reflective coatings test methods
Standard published on 28.2.2025
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