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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
Test methods for density and relative density of fiber reinforced plastics
WITHDRAWN published on 4.11.1978
Selected format:Shotgun
WITHDRAWN published on 29.8.1993
Selected format:Primer
WITHDRAWN published on 29.8.1993
Selected format:Shell case for shotgun
WITHDRAWN published on 29.8.1993
Selected format:Rare-earth phosphorus with red, green, blue luminescence for fluorescent lamp
WITHDRAWN published on 15.9.1993
Selected format:Rare earth three-band phosphors for fluorescent lamps
WITHDRAWN published on 19.11.2002
Selected format:Measuring methods of rare-earth phosphorus with red,green,blue luminescence for fluorescent lamp--Measuringmethod of relative brightness
WITHDRAWN published on 15.9.1993
Selected format:Test methods of rare earth three-band phosphors for fluorescent lamps—Determination of relative brightness
WITHDRAWN published on 19.11.2002
Selected format:Rare-earth phosphors with red,green,blue luminescencefor fluorescent lamp--Measuring method of chromaticity coordinates
WITHDRAWN published on 15.9.1993
Selected format:Test methods of rare earth three-band phosphors for fluorescent lamps—Determination of emission spectrum and chromaticity
WITHDRAWN published on 19.11.2002
Selected format:Latest update: 2026-04-08 (Number of items: 2 271 105)
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