| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 7962.21-2019 | English | 279 |
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Days<=3
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Test method of colourless optical glass -- Part 21: Resistance to attack by aqueous alkaline solutions
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GB/T 7962.21-2019
| Valid |
GB/T 7962.21-2019
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