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Standards GB - Chinese national standards - Page 5568
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 11520-1989
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Hygienic standard for glycidyl methacrylate in the air of workplace
WITHDRAWN published on 29.3.1989
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GB 11521-1989
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Hygienic standard for vermiculite dust in the air of workplace
WITHDRAWN published on 29.3.1989
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GB 11522-1989
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Hygienic standard for titanium dioxide dust in the air of workplace
WITHDRAWN published on 29.3.1989
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GB/T 11523-1989
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Specification for measuring hand-transmitted vibration
WITHDRAWN published on 29.3.1989
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GB 11524-1989
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Hygienic standard for ethylene chlorohydrin in the air of workplace
WITHDRAWN published on 20.6.1989
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GB 11525-1989
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Hygienic standard for acrylamide in the air of workplace
WITHDRAWN published on 20.6.1989
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GB 11526-1989
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Hygienic standard for chlorothalonile in the air of workplace
WITHDRAWN published on 20.6.1989
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GB 11527-1989
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Hygienic standard for silicon carbide dust in the air of workplace
WITHDRAWN published on 20.6.1989
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GB 11528-1989
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Hygienic standard for grinding wheel dust in the air of workplace
WITHDRAWN published on 20.6.1989
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GB 11529-1989
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Hygienic standard for cobalt and its oxides in the air of workplace
WITHDRAWN published on 20.6.1989
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