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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
Conservation tillage equipment—Subsoiler
WITHDRAWN published on 30.11.2009
Selected format:Conservation tillage equipment—Disc harrow
WITHDRAWN published on 30.11.2009
Selected format:Conservation tillage equipment—Smashed root stubble machine
WITHDRAWN published on 30.11.2009
Selected format:Conservation tillage equipment—Smashed straw machine
WITHDRAWN published on 30.11.2009
Selected format:Vibratory subsoiling excavator
WITHDRAWN published on 30.11.2009
Selected format:Equipment for crop protection—Knapsack sprayers—Part 1:Requirements and test methods
WITHDRAWN published on 30.11.2009
Selected format:Equipment for crop protection—Knapsack sprayers—Part 2:Performance limits
WITHDRAWN published on 30.11.2009
Selected format:Troilite and sulphur concentrates--Determination of zinc content
WITHDRAWN published on 1.1.1981
Selected format:Pyrites and concentrate—Determination of zinc content—Part 1:Flame atomic absorption spectrometric method
WITHDRAWN published on 25.10.1996
Selected format:Pyrites and concentrate—Determination of zinc content—Part 2:Oscilloscopic polarography method
WITHDRAWN published on 25.10.1996
Selected format:Latest update: 2026-04-02 (Number of items: 2 270 295)
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