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stainless steel security door,aluminium vs steel security door,steel security door and frame

Steel fire door insulation and smoking have good results, reducing the entry and diffusion of tobacco poisons, and avoiding the rapid death of trapped people caused by the inhalation of toxic smoke. Steel fire door is impact resistant, the structural strength can withstand long-term collision, does not reduce fire prevention, and can withstand the impact of fire hydrant.

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आग प्रतिरोधक दरवाजा निर्माता,stainless steel security door,अग्निरोधक मुख्य दरवाजा, अग्निरोधक दरवाजा साहित्य,aluminium vs steel security door,फायर रेटेड दरवाजाची जाडी, स्टीलचा दरवाजा x, आपत्कालीन एक्झिट दरवाजा वापर, फायर रेटेड दरवाजा 90 मिनिट,स्टील सुरक्षा दरवाजा आणि फ्रेम,

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