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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
Chemical reagent--L-Cysteine hydrochloride anhydrous
WITHDRAWN published on 1.3.1993
Selected format:Flexible copper stranded conductors for electrical purposes—Part 1:General
WITHDRAWN published on 6.6.1991
Selected format:Flexible copper stranded conductors for electrical purposes—Part 2:Flexible copper stranded conductors
WITHDRAWN published on 6.6.1991
Selected format:Flexible copper stranded conductors for electrical purposes—Part 3:Flexible copper wire for antenna
WITHDRAWN published on 6.6.1991
Selected format:Flexible copper stranded conductors for electrical purposes—Part 4:Copper brush wires
WITHDRAWN published on 6.6.1991
Selected format:Trolley and contact wires for electric traction—Part 1:General
WITHDRAWN published on 6.6.1991
Selected format:Trolley and contact wires for electric traction—Part 1:Copper and copper-alloy contact wires
WITHDRAWN published on 30.6.2008
Selected format:Trolley and contact wires for electric traction—Part 2:Copper trolley and contact wires
WITHDRAWN published on 6.6.1991
Selected format:Trolley and contact wires for electric traction Part 2:Aluminium and steel composite trolley and contact wires
WITHDRAWN published on 30.6.2008
Selected format:Trolley and contact wires for electric traction—Part 3:Aluminium and steel composite trolley and contact wires
WITHDRAWN published on 6.6.1991
Selected format:Latest update: 2026-01-16 (Number of items: 2 254 749)
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