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金属书圈开口活页圈活页环装订铁圈卡片活动圈彩色开口环厂家直销
| inner 15mm outer 20mm 2.0 line(内15mm外20mm 2.0线) | USD $0.03 | 96992837 piece available |
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| inner 20mm outer 25mm 2.2 line(内20mm外25mm 2.2线) | USD $0.03 | 94542578 piece available |
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| inner 25mm outer 30mm 2.2 line(内25mm外30mm 2.2线) | USD $0.03 | 87343241 piece available |
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| inner 25mm outer 31mm 2.7 lines(内25mm外31mm 2.7线) | USD $0.04 | 47877909 piece available |
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| inner 30mm outer 35mm 2.2 line(内30mm外35mm 2.2线) | USD $0.04 | 97593485 piece available |
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| mm inner and 38mm 2.7 outer lines(内32mm外38mm 2.7线) | USD $0.04 | 47915820 piece available |
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| inner 35mm outer 40mm 2.7 lines(内35mm外40mm 2.7线) | USD $0.05 | 48146677 piece available |
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| inner 38mm outer 45mm 3.0 line(内38mm外45mm 3.0线) | USD $0.05 | 43393113 piece available |
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| inner 45mm outer 50mm 3.0 line(内45mm外50mm 3.0线) | USD $0.06 | 48836956 piece available |
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| inner 50mm outer 55mm 3.0 line(内50mm外55mm 3.0线) | USD $0.06 | 48601038 piece available |
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| inner 55mm outer 60mm 3.0 line(内55mm外60mm 3.0线) | USD $0.07 | 48986534 piece available |
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| inner 60mm outer 70mm 3.2 line(内60mm外70mm 3.2线) | USD $0.08 | 48735523 piece available |
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| inner 70mm outer 80mm 4.0 line(内70mm外80mm 4.0线) | USD $0.13 | 48988675 piece available |
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| inside 75mm outside 85mm 4.0 lines(内75mm外85mm 4.0线) | USD $0.13 | 48986315 piece available |
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| inner 80mm outer 88mm 4.0 line(内80mm外88mm 4.0线) | USD $0.15 | 48977533 piece available |
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品名：书圈 活动书环 开口活动圈
材质：铁 （其它材质需要定制）
常用尺寸：外径20 25 30 31 35 38 40 45 50 55 60 70 80 88mm
工艺：表面电镀 可以过测试
特点：开合舒适，不易掉色
| 内径 单位mm | 线径 单位mm | 外径 单位mm | 克重 | 个/件 |
| 14 | 2.0 | 20 | 1.46 | 48000 |
| 20 | 2.2 | 25 | 2.17 | 30000 |
| 25 | 2.2 | 30 | 2.73 | 22000 |
| 25 | 2.7 | 31 | 4.06 | 16000 |
| 25 | 3.0 | 32 | 4.85 | 14000 |
| 30 | 2.2 | 35 | 3.14 | 18000 |
| 32 | 2.7 | 38 | 4.95 | 12000 |
| 35 | 2.7 | 40 | 5.46 | 10000 |
| 35 | 3.0 | 41 | 6.65 | 8500 |
| 38 | 3.0 | 45 | 7.08 | 8000 |
| 40 | 3.0 | 46 | 7.55 | 7500 |
| 45 | 3.0 | 50 | 8.30 | 6000 |
| 50 | 3.0 | 55 | 9.10 | 5000 |
| 55 | 3.0 | 60 | 9.60 | 4500 |
| 60 | 4.0 | 68 | 20.4 | 2500 |
| 60 | 3.0 | 70 | 13.4 | 3200 |
| 70 | 4.0 | 80 | 23.5 | 2000 |
| 75 | 4.0 | 85 | 24.6 | 1700 |
| 80 | 4.0 | 88 | 26.3 | 1600 |
定做说明
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