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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
Guide for the preparation of electrical and electronic safety publications and the use of basic safety publications and group safety publications
Standard published on 12.7.2017
Selected format:Electrical installations in ships—Primary DC distribution—System design architecture
Standard published on 3.12.2025
Selected format:Classification and code of employment form in organization
Standard published on 6.5.2009
Selected format:Information technology--Galvanic isolation of balanced interchange circuits
Standard published on 2.9.1996
Selected format:Information processing systems--Open systems interconnection--File transfer access and management--Part 1:General introduction
Standard published on 2.9.1996
Selected format:Information processing systems--Open systems interconnection--File transferaccess and management--Part 2:Virtual file store definition
Standard published on 2.9.1996
Selected format:Information processing systems--Open systems interconnection--File transfer access and management--Part 3:File service definition
Standard published on 2.9.1996
Selected format:Information processing systems--Open systems interconnection--File transfer access and management--Part 4:File protocol specification
Standard published on 2.9.1996
Selected format:Information processing systems--Open systems interconnection--File transferaccess and management--Part 5:Protocol implementation conformance statement proforma
Standard published on 26.12.1996
Selected format:Water-tube boilers—Part 1: General requirements
Standard published on 9.3.2022
Selected format:Latest update: 2026-06-14 (Number of items: 2 282 206)
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