| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJF 1251-1990 | English | 239 |
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Days<=2
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O.T.C. of Hardness Primary Standard for Shore
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JJF 1251-1990
| Obsolete |
JJF 1251-1990
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