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Standards GB - Chinese national standards - Page 5880
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 18058-2000
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Hygienic standard for monomethyl-hydrazine in air of residential area
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GB 18059-2000
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Hygienic standard for unsymmetric dimethyl hydrazine in air of residential area
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GB 18060-2000
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Hygienic standard for hydrazine in air of residential area
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GB 18061-2000
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Hygienic standard for hydrazine in water sources
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GB 18062-2000
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Hygienic standard for monomethyl hydrazine in water sources
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GB 18063-2000
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Hygienic standard for unsymmetrical dimethyl hydrazine in water sources
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GB 18064-2000
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Hygienic standard for diethylenetriamine in water sources
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GB 18065-2000
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Hygienic standard for triethylamine in water sources
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GB 18066-2000
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Hygienic standard for ozone air of residential area
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GB 18067-2000
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Hygienic standard for phenol in air of residential area
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