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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 22402-2008 |
Photography - Processing chemicals - Specifications for anhydrous sodium thiosulfate and sodium thiosulfate pentahydrate 摄影 加工用化学品 无水硫代硫酸钠和五水合硫代硫酸钠 |
China National Standards pentahydrate |
 English PDF |
| GB/T 665-2007 |
Chemical reagent - Copper(Ⅱ) Sulfate pentahydrate 化学试剂 无水合硫酸铜(Ⅱ)(硫酸铜) |
China National Standards pentahydrate |
English PDF |
| GB/T 637-2006 |
Chemical reagent - Sodium thiosulfate pentahydrate 化学试剂 五水合硫代硫酸钠(硫代硫酸钠) |
China National Standards pentahydrate |
English PDF |
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