| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB 1251.1-1989 | English | 439 |
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Days<=4
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Danger signals for work places--Auditory danger signals
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GB 1251.1-1989
| Obsolete |
GB 1251.1-1989
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