Standards GB - Chinese national standards - Page 4889

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 4915-2013

Emission standard of air pollutants for cement industry

Standard published on 31.12.2013

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GB/T 492-1989

Sodium base lubricating grease

Standard published on 31.3.1989

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GB/T 4920-1985

Determination of sulphuric acidmist in tail gas in sulphuric acid concentration process--Barium chromate colorimetric method

Standard published on 18.1.1985

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GB/T 4921-1985

Waste gasfrom manufacturing process--Determination of chemical oxygendemand and nitrogenoxide--Potassium dichromate oxidation and naphthylethylene diamine colorimetric method

Standard published on 18.1.1985

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GB/T 4925-2008

Fishing nets - Method of test for the determination of strength and breaking elongation of netting of synthetic fiber

Standard published on 22.8.2008

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