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Product Features：
Tension bar, tension spring a wide range of specifications, according to the picture or sample production and consultation.
| 拉簧 | 张力杆 | 参考线径范围（mm） | 张力范围 |
| 1# | TYPE1 | Φ0.01-Φ0.023 | 0.5-2.5g |
| 2# | TYPE1 | Φ0.02-Φ0.04 | 2.5-9g |
| 3# | TYPE1 | Φ0.03-Φ0.07 | 4.5-20g |
| 4# | TYPE2 | Φ0.055-Φ0.11 | 17-57g |
| 5# | TYPE3 | Φ0.072-Φ0.15 | 26-110g |
| 6# | TYPE3 | Φ0.10-Φ0.21 | 70-255g |
| 7# | TYPE4 | Φ0.14-Φ0.32 | 125-500g |
| 8# | TYPE5 | Φ0.17-Φ0.40 | 200-700g |
