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| International Standard Category: Auxiliary materials and additives for plastics |
GB/T 7050-1993 Colour black. Determination of tinting strength
色素炭黑着色力的测定 ;
| Category No.: | 83.040.30 | Valid Status: | superseded |
| Issued Organization: | Issued Date: | 1993-03-03 | |
| Implemented Date: | 1993-12-1 | Abolished Date: | 2004-05-01 |
| Superseded Standard.: | GB/T 7050-2003 Colour carbon black―Determination of tinting strength |
Superseded Date: | 2004-5-1 |
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