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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
Surface chemical analysis-Secondary-ion mass spectrometry-Determination of boron atomic concentration in silicon using uniformly doped materials
WITHDRAWN published on 27.3.2006
Selected format:Control network LONWORKS technology specification Part1:Protocol specification
WITHDRAWN published on 8.5.2006
Selected format:Control network LONWORKS technology specification Part 2:Power line channel specification
WITHDRAWN published on 8.5.2006
Selected format:Control network LONWORKS technology specification Part 3: Free-topology twisted-pair channel specification
WITHDRAWN published on 8.5.2006
Selected format:Control network LONWORKS technology specification Part 4: Tunneling component network protocols over internet protocol channels
WITHDRAWN published on 8.5.2006
Selected format:Earth-moving machinery—Safety signs and hazard pictorials—General principles
WITHDRAWN published on 29.3.2006
Selected format:Earth-moving machinery—Machine safety labels—General principles
WITHDRAWN published on 3.9.2014
Selected format:Methods of measuring the characteristics of recording and reproducing equipment for sound on magnetic tape
WITHDRAWN published on 27.2.1987
Selected format:The cab of commercial vehicles-External projections
WITHDRAWN published on 3.4.2006
Selected format:Equipment for crop protection—Spraying equipment—Part 1:Test methods for sprayer nozzles
WITHDRAWN published on 3.4.2006
Selected format:Latest update: 2026-06-16 (Number of items: 2 283 261)
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