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| Chinese National Standard Category: Bicycle |
| English Title: | Cycles - Lighting and retro-reflective devices - Part 4: Lighting systems powered by the cycle's movement |
| Chinese Title: | 自行车 照明和回复反射装置 第4部分：自行车发电机供电的照明系统 |
| Standard No.: | GB/T 31887.4-2025 |
| Category No.: | Y14 |
| Issued by: | SAMR, SAC |
| Issued on: | 2025-10-31 |
| Implemented on: | 2026-5-1 |
| Status: | to be valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | GB/T 31887.4-2023 Cycles—Lighting and retro-reflective devices—Part 4: Lighting systems powered by the cycle's movement |
| Word Count: | 10500 words |
| Similar Standards: |
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