| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 4728.9-2022 | English | 854 |
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Days<=5
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Graphical symbols for electrical diagrams - Part 9: Telecommunications: Switching and peripheral equipment
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GB/T 4728.9-2022
| Valid |
GB/T 4728.9-2022
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