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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
Paper and board--Measurement ofspecular gloss (45°)
WITHDRAWN published on 29.3.1988
Selected format:Paper and board--Measurement ofspecular gloss (75°)
WITHDRAWN published on 29.3.1988
Selected format:Paper--Determination of softness
WITHDRAWN published on 29.3.1988
Selected format:Paper —Determination of softness
WITHDRAWN published on 6.9.2002
Selected format:Paper board and pulps--Determination ofcopper content
WITHDRAWN published on 29.3.1988
Selected format:Paperboard and pulp - Determination of copper content
WITHDRAWN published on 4.1.2008
Selected format:Paper board and pulps--Determination ofiron content
WITHDRAWN published on 29.3.1988
Selected format:Paperboard and pulps - Determination of iron
WITHDRAWN published on 4.1.2008
Selected format:Pulps paper and board--Determination ofmanganese
WITHDRAWN published on 29.3.1988
Selected format:paperboard and pulp - Determination of manganese
WITHDRAWN published on 4.1.2008
Selected format:Latest update: 2025-08-27 (Number of items: 2 213 396)
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