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| Manufacturer | Lien Yundong Labour Insurance Co. Ltd. |
| Category | Hearing protection |
| Price | ￥ |
| Origin | China |
| Imported or not | Yes |
| Brand | 3M |
| Materials | Sponge |
| Noise reduction rate | 35 |
| Implementation standards | Standard |
| Functions | Noise reduction |
| Scope of use | Hearing protection |
| Feature services | Consultants |
| Goods | H540A |
| Series | H540A |
| Specifications | Standard |
| SNR | 35 |
| NNR | 30 |
| The way you wear it. | Headwear |
| Inline material | Cactus sponge. |
| Order number | H540A |
| Cup Cover Color | Red |
| Fit to Noise Environment | 105 dB |
| Glass thickness | NA |
| Model | H540A |
| Whether or not to export a source of goods exclusively across borders | Yes |
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