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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 23193-2017 |
Determination of theanine in tea—Uusing high performance liquid chromatography 茶叶中茶氨酸的测定 高效液相色谱法 |
China National Standards Determination theanine tea |
 English PDF |
| GB/T 23193-2008 |
Determination of theanine in tea - High performance liquid chromatography 茶叶中茶氨酸的测定 高效液相色谱法 |
China National Standards Determination theanine tea |
English PDF |
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