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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
Classification and terminology of natural stones
Standard published on 1.8.2025
Selected format:Test methods of specular gloss for decorative building materials
Standard published on 30.6.2008
Selected format:Surface active agents—Determination of iodine value
Standard published on 14.12.2020
Selected format:Paints and varnishes - Determination of resistnace to humidity - Continuous condensation
Standard published on 4.6.2008
Selected format:
Paints and varnishes—Determination of resistance to humidity—Part 1:Condensation (single-sided exposure)
Execute Date: february 2027
Standard published on 2.7.2026
Selected format:Paints and varnishes—Determination of resistance to humidity—Part 2: Condensation(in-cabinet exposure with heated water reservoir)
Standard published on 25.3.2019
Selected format:Petroleum and liquid petroleum products—Level measurement—Manual methods
Standard published on 27.11.2023
Selected format:Heavy duty gear oils for automobile (GL-5)
Standard published on 13.7.2018
Selected format:Water quality--Determination of lead--Oscillopolarography
Standard published on 23.11.1992
Selected format:Water quality--Determination of thiocyanate--Isonicotinic acid pyrazolone spectrophotometry
Standard published on 23.11.1992
Selected format:Latest update: 2026-09-04 (Number of items: 2 300 131)
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