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International Standard Category: Aluminium and aluminium alloys |
Category No.: | 77.120.10 | Valid Status: | superseded |
Issued Organization: | General Administration of Quality Supervision, Inspection and Quarantine of PRC | Issued Date: | 2001-07-01 |
Implemented Date: | 2001-1-2 | Abolished Date: | |
Superseded Standard.: | GB/T 20975.21-2008 Methods for chemical analysis of aluminium and aluminium alloys - Part 21:Determination of calcium content Flame atomic absorption spectrometric method |
Superseded Date: | 2008-9-1 |
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