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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
Imaging materials - Photographic film and papers - Method for determining the resistance of photographic emulsions to wet abrasion
Standard published on 24.9.2008
Selected format:Method for determining the speed and average gradient of black-and-white aerial camera films
Standard published on 20.9.1988
Selected format:Method for determining the speed of colour reversal camera films
Standard published on 20.9.1988
Selected format:Method for determination of silver in photographic films, papers, emulsions, fixing baths, effluents, sludges or residues
Standard published on 24.9.2008
Selected format:Rubber, vulcanized or thermoplastic-Determination of abrasion resistance using a rotating cylindrical drum device
Standard published on 1.4.2008
Selected format:Rubber—Measurement of vulcanization characteristics using curemeters—Part 1Introduction
Standard published on 25.4.2025
Selected format:Rubber—Measurement of vulcanization characteristics using curemeters—Part 2Oscillating disc curemeter
Standard published on 30.6.2025
Selected format:Rubber—Measurement of vulcanization characteristics using curemeters—Part 3:Rotorless curemeter
Standard published on 29.8.2025
Selected format:Rubber, vulcanized or thermoplastic - Determination of dynamic properties - Part 1: General guidance
Standard published on 7.12.2006
Selected format:Rubber, vulcanized or thermoplastic - Determination of dynamic properties - Part 2:Torsion pendulum methods at low frequencies
Standard published on 4.6.2008
Selected format:Latest update: 2026-06-14 (Number of items: 2 282 206)
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