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| International Standard Category: Auxiliary materials and additives for plastics |
GB/T 3780.21-2006 Carbon black - Part 21: Determination of sieve residue for rubber compounding ingredients - Water washing method
炭黑 第21部分：橡胶配合剂筛余物的测定 水冲洗法 ;
| Category No.: | 83.040.30 | Valid Status: | superseded |
| Issued Organization: | AQSIQ; SAC | Issued Date: | 2006-8-1 |
| Implemented Date: | 2007-1-1 | Abolished Date: | 2017-01-01 |
| Superseded Standard.: | GB/T 3780.21-2016 Carbon black - Part 21: Determination of sieve residue - Water flushing method |
Superseded Date: | 2017-1-1 |
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