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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
Primary chemical—Sodium carbonate,anhydrous
WITHDRAWN published on 31.3.1989
Selected format:Working chemical Potassium chloride
WITHDRAWN published on 1.3.1989
Selected format:Working chemical General rules for the potentiometric weight titration
WITHDRAWN published on 31.3.1989
Selected format:Working chemical General rules for the weight titration
WITHDRAWN published on 31.3.1989
Selected format:Paper,board and pulps--Conditioning of samples and testing atmospheres
WITHDRAWN published on 31.3.1989
Selected format:Paper, board and pulps—Standard atmosphere for conditioning and testing
WITHDRAWN published on 6.9.2002
Selected format:Pulp--Determination of dirt
WITHDRAWN published on 31.3.1989
Selected format:Pulps—Determination of alcohol-benzene solubles
WITHDRAWN published on 31.3.1989
Selected format:Raw fiber material—Determination of pectin content
WITHDRAWN published on 31.3.1989
Selected format:Terminology for water transport commercial
WITHDRAWN published on 31.3.1989
Selected format:Latest update: 2026-04-06 (Number of items: 2 271 069)
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