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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
Pesticide--Guidelines for the field efficacy trials()--Part 127:Herbicides against weeds in crops with directional spray
Standard published on 3.3.2004
Selected format:Pesticide--Guidelines for the field efficacy trials()--Part 128:Herbicides against weeds in cotton
Standard published on 3.3.2004
Selected format:Pesticide--Guidelines for the field efficacy trials()--Part 129:Herbicides against weeds in tobacco
Standard published on 3.3.2004
Selected format:Pesticide--Guidelines for the field efficacy trials(I)--Insecticides against larvaeof lepidoptera on crucifer vegetable
Standard published on 1.2.2000
Selected format:
Pesticide—Guidelines for the field efficacy trials—Part 13: Insecticides against larvae of lepidoptera on crucifer vegetable
Execute Date: october 2026
Standard published on 31.3.2026
Selected format:Pesticide--Guidelines for the field efficacy trials()--Part 130:Herbicides against weeds in latex
Standard published on 3.3.2004
Selected format:Pesticide--Guidelines for the field efficacy trials()--Part 131:Chemical induction of male sterility induce male yeld in wheat
Standard published on 3.3.2004
Selected format:Pesticide--Guidelines for the field efficacy trials()--Part 132:Plant growth regulator trials on wheat
Standard published on 3.3.2004
Selected format:Pesticide--Guidelines for the field efficacy trials()--Part 133:Defolate desiccant trials on potato
Standard published on 3.3.2004
Selected format:Pesticide--Guidelines for the field efficacy trials()--Part 134:Plant growth regulator trials on cotton
Standard published on 3.3.2004
Selected format:Latest update: 2026-09-09 (Number of items: 2 300 143)
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