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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
Raw natural rubber--Determination of volatile matter content
WITHDRAWN published on 27.7.1987
Selected format:Rubber, raw natural and rubber latex, natural—Determination of nitrogen content
WITHDRAWN published on 11.8.1999
Selected format:Raw natural rubber—Smoked sheets
WITHDRAWN published on 10.7.1987
Selected format:Raw natural rubber—White crepes and pale crepes
WITHDRAWN published on 10.7.1987
Selected format:Equipment for harvesting--Combine harvester--Determination and designation of grain tank capacity and unloading device performance
WITHDRAWN published on 23.7.1987
Selected format:Equipment for harvesting—Combine harvesters—Determination and designation of grain tank capacity and unloading device performance
WITHDRAWN published on 8.6.2005
Selected format:Dimensional compatibility of forage harvesting machinery
WITHDRAWN published on 23.7.1987
Selected format:Equipment for harvesting—Combine harvesters—Test procedure
WITHDRAWN published on 23.12.1996
Selected format:Hydraulic fluid power--Compensated flow control valves--Mounting surfaces
WITHDRAWN published on 23.7.1987
Selected format:Hydraulic fluid power—Compensated flow control valves—Mounting surfaces
WITHDRAWN published on 16.6.2003
Selected format:Latest update: 2025-07-16 (Number of items: 2 208 753)
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