| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 12085.20-2011 | English | 399 |
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Days<=3
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Optics and optical instruments -- Environmental test methods -- Part 20: Humid atmosphere containing sulfur dioxide or hydrogen sulfide
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GB/T 12085.20-2011
| Obsolete |
GB/T 12085.20-2011
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