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| Manufacturer | Lien Yundong Labour Insurance Co. Ltd. |
| Category | Hearing protection |
| Price | ￥ |
| Origin | China |
| Imported or not | Yes |
| Brand | 3M |
| Model | 311-1101-Line Cylinder |
| Materials | PVC |
| Noise reduction rate | 30 |
| Implementation standards | Standard |
| Functions | Noise-proof. Noise-proof. |
| Scope of use | Metro, aviation, study, work, sleep. |
| Feature services | Consultants |
| Series | 311-1101 |
| Connect Lines | Yes. |
| Dimensions | Standard |
| Usage | Zenium |
| Classification | Soundproof ear plugs |
| Effectiveness | Okay. |
| Packaging Method | 200 sets/ box |
| SNR | 28 |
| Could you wash it? | Yes |
| Ear plug head shape | Cylinder |
| Earplug colour | Yellow |
| Goods | 311-1101 |
| There's an authorized brand. | Yes |
| Whether or not to export a source of goods exclusively across borders | Yes |
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