| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| WS/T 663-2020 | English | 179 |
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Days<=3
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Specification for screening of refractive error in primary and secondary school students
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WS/T 663-2020
| Valid |
WS/T 663-2020
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