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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 41413-2022 |
Determination of migration of N-nitrosamine and its precursors in toys high performance liquid chromatography tandem mass spectrometry {译} 玩具中N-亚硝胺及其前体物迁移量的测定 高效液相色谱-串联质谱法 |
China National Standards precursors |
 English PDF |
| GB/T 23442-2009 |
Determination of structure and morphology for the precursors of polyacrylonitrile-based carbon fibers 聚丙烯腈基碳纤维原丝结构和形态的测定 |
China National Standards precursors |
English PDF |
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