We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
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 processing--Implementation of the 7-bit coded character set and its 7-bit and 8-bit extensions on 3.81mm magnetic tape cassette for data interchange
Standard published on 14.3.1987
Selected format:Fibrous raw material, pulp, paper and board—Determination of residue(ash) on ignition at 575 and 900
Standard published on 28.12.2018
Selected format:Information technology - Telecommunications and information exchange between systems - High-level data link control (HDLC) procedures
Standard published on 19.8.2008
Selected format:Heat sink of semiconductor devices--Generic specification
Standard published on 16.3.1987
Selected format:Heat sink of semiconductor devices--Heat sinkextruded shapes
Standard published on 16.3.1987
Selected format:Heat sink of semiconductor devices--Heat sink staggered fingers shapes
Standard published on 16.3.1987
Selected format:Generic specification for optical fibre cables--Part 1:General
Standard published on 24.11.2003
Selected format:Optical fibre cable generic specification - Part 2: Basic optical cable test procedures
Standard published on 31.3.2008
Selected format:Optical fibre cable generic specification—Part 20: Basic optical cable test procedures—General and definitions
Standard published on 30.4.2021
Selected format:Optical fibre cable generic specification—Part 21Basic optical cable test procedures—Mechanical test methods
Standard published on 11.10.2021
Selected format:Latest update: 2026-06-10 (Number of items: 2 281 917)
© Copyright 2026 NORMSERVIS s.r.o.