| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| CH/T 8020-2009 | English | 639 |
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Days<=4
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Verification regulation of Invar bar-coded levelling staffs
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CH/T 8020-2009
| Obsolete |
CH/T 8020-2009
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