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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
Requirements and test methods for identify system of printed Chinese character
WITHDRAWN published on 3.1.2000
Selected format:Information technology—Security techniques—Modes of operation for an n-bit block cipher
WITHDRAWN published on 3.1.2000
Selected format:Information technology—Security techniques—Modes of operation for a block cipher
WITHDRAWN published on 26.6.2008
Selected format:Binary floating-point arithmetic for microprocessor systems
WITHDRAWN published on 3.1.2000
Selected format:Information technology—Open Systems Interconnection—Procedures for the operation of OSI Registration Authorities—Part 1:General procedures
WITHDRAWN published on 3.1.2000
Selected format:Information technology—Open systems interconnection—Procedures for the operation of OSI registrartion authorities—Part 8:Generation and registration of Universally Unique Identifiers (UUIDs) and their use as ASN.1 object identifier components
WITHDRAWN published on 14.1.2011
Selected format:Stipulation of classification for raw silk
WITHDRAWN published on 1.1.1986
Selected format:Raw silk
WITHDRAWN published on 26.9.2001
Selected format:Information technology—Keyboard layouts for text and office systems—Part 2:Alphanumeric section
WITHDRAWN published on 3.1.2000
Selected format:Information technology—Keyboard layouts for text and office system—Part 3:Complementary layouts of the alphanumeric zone of the alphanumeric section
WITHDRAWN published on 3.1.2000
Selected format:Latest update: 2025-09-10 (Number of items: 2 232 034)
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