| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 12620-1990 | English | 239 |
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Days<=2
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Slots with round end and slots with square end plate screens
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GB/T 12620-1990
| Obsolete |
GB/T 12620-1990
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