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International Standard Category: Abrasives |
Category No.: | 25.100.70 | Valid Status: | superseded |
Issued Organization: | Issued Date: | 1989-03-31 | |
Implemented Date: | 1990-1-1 | Abolished Date: | |
Superseded Standard.: | GB/T 3045-2003 Abrasive grains—chemical analysis of silicon carbide |
Superseded Date: | 2004-4-1 |
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