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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
Urine-absorbing aids for incontinence—Test methods for characterizing Polymer-based absorbent materials—Part 1:Determination of pH
WITHDRAWN published on 10.3.2006
Selected format:Urine-absorbing aids for incontinence—Test methods for characterizing Polymer-based absorbent materials—Part 4:Determination of moisture content by mass loss upon heating
WITHDRAWN published on 10.3.2006
Selected format:Urine-absorbing aids for incontinence—Test methods for characterizing polymer-based absorbent materials—Part 5:Gravimetric determination of free swell capacity in saline solution
WITHDRAWN published on 10.3.2006
Selected format:Potassium sulfate for agricultural use
WITHDRAWN published on 14.3.2006
Selected format:Radio-controlled clocks
WITHDRAWN published on 30.6.2006
Selected format:Multi-rifled seamless steel tubes for high-pressure boiler
WITHDRAWN published on 16.8.2006
Selected format:Brass sheet
WITHDRAWN published on 31.3.1989
Selected format:Calcium magnesium phosphate
WITHDRAWN published on 14.3.2006
Selected format:Superphosphate
WITHDRAWN published on 14.3.2006
Selected format:Earth-moving machinery—Lighting, signaling, and marking lights, and reflex-reflector devices
WITHDRAWN published on 19.7.2006
Selected format:Latest update: 2026-04-28 (Number of items: 2 274 955)
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