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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
The specification for marine monitoring - Part 5Sediment analysis
Standard published on 18.10.2007
Selected format:The specification for marine monitoring - Part 6Organism analysis
Standard published on 18.10.2007
Selected format:The specification for marine monitoring - Part 7Ecological survey for offshore pollution and biological monitoring
Standard published on 18.10.2007
Selected format:Regulation on aids to navigation for marking of offshore structures,China
Standard published on 17.11.2020
Selected format:Regulation for surface colours of visual aids to navigation
Standard published on 17.11.2020
Selected format:Series 1 freight containers—Handling and securing
Standard published on 27.11.2023
Selected format:Ships and marine technology—Dredgers—Calssification
Standard published on 5.10.2025
Selected format:Shipbuilding and marine structures--Windows and side scuttles--Vocabulary
Standard published on 18.5.1998
Selected format:Shipbuilding--Principal ship dimensions--Termin-ology and definitions for computer application
Standard published on 18.5.1998
Selected format:Sizing and selection of electric submersible pump installations
Standard published on 2.12.2025
Selected format:Latest update: 2026-08-28 (Number of items: 2 298 625)
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