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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
Quantitative analysis method of cashmere,wool and their mixture fibers
WITHDRAWN published on 30.8.1993
Selected format:Oxygen free copper sheets and strips
WITHDRAWN published on 30.8.1993
Selected format:Oxygen-free copper sheets and strips
WITHDRAWN published on 4.7.2005
Selected format:Copper-nickel alloy strips
WITHDRAWN published on 1.1.1993
Selected format:Bronze strips
WITHDRAWN published on 1.1.1993
Selected format:Environmental climatic conditions appearing in different higher lands for electrical products
WITHDRAWN published on 5.9.1993
Selected format:Electrical relays. Contact performance of electrical ralays
WITHDRAWN published on 5.9.1993
Selected format:Electrical relays—Part 23:Contact performance
WITHDRAWN published on 4.12.2002
Selected format:Electrical relays—Part 22:Electrical disturbance tests for measuring relays and protection equipment—Section 4:Fast transient disturbance test
WITHDRAWN published on 13.12.1996
Selected format:Electrical relays—Part 22-4:Electrical disturbance tests for measuring relays and protection equipment—Electrical fast transient/burst immunity test
WITHDRAWN published on 23.1.2007
Selected format:Latest update: 2026-04-08 (Number of items: 2 271 105)
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