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Product name | Wholesale price Industrial automatic steel fire resistant roller shutter door with underground garage |
Surface treatment | be treated with galvanizing |
Refractory limit time | >3 hours |
Opening and closing speed | 5.6~6.4m/min |
Material | steel,inorganic firer |
Operating noise | 71dB |
Curtain protection | Water spray system |
Application | Commercial Building, Industrial Building, such as hotel, underground garage |
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