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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
Information technology--Open systems interconnection--Connectionless presentation protocol--Part 1:Protocol specification
Standard published on 5.11.1998
Selected format:Information technology--Open systems interconnection--Data link service definition
Standard published on 5.11.1998
Selected format:Information technology - Requirements and Guidelines for Test Methods Specification and Test Method implementation for Measuring Conformance to POSIX Standards
Standard published on 18.7.2008
Selected format:Identification cards--Optical memory cards--Linear recording method--Part 1:Physical characteristics
Standard published on 5.11.1998
Selected format:Identification cards--Optical memory cards--Linear recording method--Part 2:Dimensions and location of the accessible optical area
Standard published on 5.11.1998
Selected format:Identification cards--Optical memory cards--Linear recording method--Part 3:Optical properties and characteristics
Standard published on 5.11.1998
Selected format:Identification cards--Optical memory cards--Linear recording method--Part 4:Logical data structures
Standard published on 3.1.2000
Selected format:Identification cards--Optical memory cards--General characteristics
Standard published on 5.11.1998
Selected format:Information technology - Identification cards - Financial transaction cards
Standard published on 18.6.2008
Selected format:Cards and security devices for personal identification—Test methods—Part 1: General characteristics
Standard published on 28.2.2025
Selected format:Latest update: 2026-09-03 (Number of items: 2 300 115)
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