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Professional Standard Category: National Standard |
Category No.: | GB | Valid Status: | superseded |
Issued Organization: | Issued Date: | ||
Implemented Date: | 1990-1-1 | Abolished Date: | |
Superseded Standard.: | QB/T 3807-1999 Cellular plastics. Polystyrene foam for thermal insulation |
Superseded Date: | 1998-4-21 |
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