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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
Technical condition of coal used for pulverized coal-fired boiler for power generation
WITHDRAWN published on 8.12.1998
Selected format:Specification of coal used for pulverized coal-fired boiler for power generation
WITHDRAWN published on 26.9.2010
Selected format:Technical condition of coal for cement rotary kiln
WITHDRAWN published on 16.3.2000
Selected format:Textiles--Tests for colour fastness--Specification for standard adjacent fabric: Wool
WITHDRAWN published on 26.3.1987
Selected format:Textiles—Tests for color fastness—Specification for standard adjacent fabric:Cotton and viscose
WITHDRAWN published on 26.3.1987
Selected format:Textiles--Tests for colour fastness--Specification for standard adjacent fabric: Polyester
WITHDRAWN published on 26.3.1987
Selected format:Textiles--Tests for colour fastness--Specification for standard adjacent fabric: Acrylic
WITHDRAWN published on 26.3.1987
Selected format:Textiles--Tests for colour fastness--Specification for standard adjacent fabric: Silk
WITHDRAWN published on 26.3.1987
Selected format:Wool—Determination of alkali content
WITHDRAWN published on 26.3.1987
Selected format:-
WITHDRAWN published on 1.1.1979
Selected format:Latest update: 2026-04-01 (Number of items: 2 270 267)
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