"nonahydrate " CNS Standards List| Method Calculating | Evaluation methods | Chisels Stone | Household similar | Exhaust Muffler | Lifejackets(Inflatable) | Type A1 | Cross Recesses | |
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CNS 1988
2020 Edition Sodium sulfide nonahydrate (Reagent) 九水合硫化鈉(試藥) |
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