| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| HG/T 2531-1993 | English | 439 |
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Days<=4
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(Photographic chemicals coupler COC-2 (Green 324))
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HG/T 2531-1993
| Obsolete |
HG/T 2531-1993
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