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Chinese National Standards
中華民國國家標準
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"Tannic Acid" CNS Standards List

| Method Comparison | Electric Cable | Solders  | Hexagon Socket | Oil cinnamom | Safety Code | Method Test | Fixed resistor |
K-Chemical Industry
CNS 2011    2020 Edition
Tannic Acid (Gallatannic Acid; Tannin)
化學試藥（鞣酸）

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