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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
Technical requirements on communication security of 5G mobile communication network
Standard published on 31.10.2025
Selected format:Test methods for access network equipment—10-Gigabit-Capable symmetric passive optical network (XGS-PON)
Standard published on 31.10.2025
Selected format:IPv6 deployment requirements for national e-government network
Standard published on 31.10.2025
Selected format:Chinese internet email address—Technical requirement for post office protocol to support
Standard published on 31.10.2025
Selected format:Chinese internet email address—General technical requirement for framework
Standard published on 31.10.2025
Selected format:Chinese internet email address—Technical requirement for internet message access protocol to support
Standard published on 31.10.2025
Selected format:Footwear—In-shoe measurement—Part 1Shoe length
Standard published on 31.10.2025
Selected format:Leather—Physical and mechanical tests—Determination of tensile strength and percentage elongation
Standard published on 31.10.2025
Selected format:Leather—Tests for colour fastness—Colour fastness to migration into polymeric material
Standard published on 31.10.2025
Selected format:Leather—Tests for colour fastness—General principles of testing
Standard published on 31.10.2025
Selected format:Latest update: 2026-11-10 (Number of items: 2 209 227)
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