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| International Standard Category: Binders. Sealing materials |
GB/T 13477.21-2022 Test method for building sealants—Part 21：Determination of color change after laboratory accelerated weathering procedures
建筑密封材料试验方法 第21部分：人工加速气候老化后颜色变化的测定;
| Category No.: | 91.100.50 | Valid Status: | valid |
| Issued Organization: | SAMR; SAC | Issued Date: | 2022-7-11 |
| Implemented Date: | 2023-2-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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