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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
Determination of vinyl acetate content in vinyl chloride-vinyl acetate copolymers
Standard published on 29.8.2025
Selected format:Plastics - Poly(vinyl chloride) resins - Determination of number of impurities and foreign particles
Standard published on 15.5.2008
Selected format:Determination of thermal stabitity of poly(vinyl chloride) related chlorine-containing homopolymers and copolymers and their compounds--Discoloration method
Standard published on 29.5.2002
Selected format:Plastics--Homopolymer andcopolymer resins of vinyl chloride--Determination of pH of aqueous extract
Standard published on 25.8.2003
Selected format:Plastic - Compression moulding of test specimens of thermoplastic materials
Standard published on 4.8.2008
Selected format:Instrument for soil test - Permeameter
Standard published on 21.11.2008
Selected format:Basic conditions and methods of environmental test for hydrological instrument
Standard published on 14.6.2016
Selected format:Color display chromaticity coordinates of white balance point and its tolerance
Standard published on 26.5.2008
Selected format:Safety requirements for computer field
Standard published on 30.12.2011
Selected format:Information processing--9-Track 12.7mm (0.5in) wide magnetictape for information interchange--Format and recordingusing group coding at 246 cpmm(6250 cpi)
Standard published on 18.6.1988
Selected format:Latest update: 2026-04-21 (Number of items: 2 274 412)
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