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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
Sawn timber inspection
WITHDRAWN published on 25.1.1999
Selected format:Sawn timber inspection
WITHDRAWN published on 3.7.2015
Selected format:-
WITHDRAWN published on 1.1.1984
Selected format:-
WITHDRAWN published on 1.1.1984
Selected format:-
WITHDRAWN published on 1.1.1984
Selected format:Defects in sawn timber
WITHDRAWN published on 8.12.1995
Selected format:Broad leaves woods--Defects--Classification
WITHDRAWN published on 1.1.1984
Selected format:Broad leaves woods--Defects--Terms, definition and influence on quality
WITHDRAWN published on 1.1.1984
Selected format:Broad leaves woods--Defects--Basic method of measurement
WITHDRAWN published on 1.1.1984
Selected format:Limits and methods of measurement of electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment
WITHDRAWN published on 1.1.1996
Selected format:Latest update: 2025-09-14 (Number of items: 2 232 183)
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