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Standards GB - Chinese national standards - Page 157
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 12005.10-1992
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Determination for molecular weight of polyacrylamide by viscometry
Standard published on 12.12.1992
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GB/T 12005.2-1989
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Determination of solid content of polyacrylamide
Standard published on 25.12.1989
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GB/T 12005.6-1989
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Determination of hydrolysis degree ofpartly hydrolysis polyacrylamide
Standard published on 25.12.1989
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GB/T 12005.7-1989
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Determination of particle size of powder polyacry-lamide
Standard published on 25.12.1989
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GB/T 12005.8-1989
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Determination of dissolving velocity ofpowder polyacrylamide
Standard published on 25.12.1989
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GB/T 12005.9-1992
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Designation of polyacrylamide
Standard published on 29.4.1992
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GB/T 12006.1-2009
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Plastics - Polyamides - Part 1: Determination of viscosity number
Standard published on 15.6.2009
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GB/T 12006.2-2009
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Plastics - Polyamides - Part 2: Determination of water content
Standard published on 15.6.2009
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GB/T 12006.4-1989
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Polyamide homopolymers--Determination of matter extractable by boiling methanol
Standard published on 25.12.1989
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GB/T 12007.2-1989
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Epoxide resins--Determination of sodium ion
Standard published on 25.12.1989
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