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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
Standard test method for measurement of extreme-pressure properties of lubricating fluids(four-ball method)
Standard published on 8.12.1998
Selected format:Rubber or plastics coated fabrics - Low-temperature impact test
Standard published on 14.5.2008
Selected format:Rubber, vulcanized or thermoplastic—Rubber sheets and rubber-coated fabrics—Determination of transmission rate of volatile liquids (gravimetric technique)
Standard published on 19.11.2020
Selected format:Rubber or plastics-coated fabrics--Determination of resistance to damage by flexing
Standard published on 24.4.2003
Selected format:Rubber or plastics-coated fabrics--Determination of crush resistance
Standard published on 10.1.2003
Selected format:Plastics coated fabrics--Polyvinyl chloride coatings--Rapid method for checking fusion
Standard published on 10.1.2003
Selected format:Chemical reagent - Ethyl acetate
Standard published on 26.9.2007
Selected format:Working chemical - Potassium dichromate
Standard published on 2.2.2007
Selected format:Chemical reagent - n-Butanol
Standard published on 15.5.2008
Selected format:Chemical reagent--Diethyl ether
Standard published on 29.5.2002
Selected format:Latest update: 2026-03-27 (Number of items: 2 269 573)
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