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Standards GB - Chinese national standards - Page 159
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 12008.7-2010
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Plastics - Polyether polyols - Part 7Determination of viscosity
Standard published on 26.9.2010
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GB/T 12008.7-2025
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Plastics—Polyether polyols for use in the production of polyurethane—Part 7:Determination of basicity
Standard published on 28.3.2025
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GB/T 12009.1-1989
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Isocyanates--Determination of total chlorine content
Standard published on 25.12.1989
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GB/T 12009.2-2016
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Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 2: Determination of hydrolysable chlorine
Standard published on 24.2.2016
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GB/T 12009.3-2009
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Plastics - Polymethylene polyphenyl isocyanate - Part 3: Determination of viscosity
Standard published on 15.6.2009
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GB/T 12009.4-2016
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Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 4: Determination of isocyanate content
Standard published on 24.2.2016
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GB/T 12009.5-2016
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Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 5: Determination of acidity
Standard published on 24.2.2016
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GB/T 12010.1-2008
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Plastics - Poly(vinyl alcohol)(PVAL) materials - Part 1: Designation system and basis for specifications
Standard published on 4.8.2008
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GB/T 12010.2-2010
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Plastic - Poly(vinyl alcohol)(PVAL)materials - Part 2: Determination of properties
Standard published on 2.9.2010
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GB/T 12010.3-2010
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Plastic - Poly(vinyl alcohol)(PVAL)materials - Part 3: Specification
Standard published on 2.9.2010
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