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| Chinese National Standard Category: Basic standards and general methods for synthetic resin and plastic |
| English Title: | Plastics—Determination of isotactic index for polypropylene (PP)—Low-resolution nuclear magnetic resonance spectrometry |
| Chinese Title: | 塑料 聚丙烯（PP）等规指数的测定 低分辨率核磁共振波谱法 |
| Standard No.: | GB/T 46831-2025 |
| Category No.: | G31 |
| Issued by: | SAMR;SAC |
| Issued on: | 2025-12-2 |
| Implemented on: | 2026-7-1 |
| Status: | to be valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | |
| Word Count: | 9000 words |
| Similar Standards: |
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