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| Aluminum plate thickness | The thickness of the front aluminum plate is 4 millimeters The thickness of the rear aluminum plate is 2 millimeters |
| filler | B1 grade polyurethane foam |
| Insulation strip | PA66 |
| workmanship |
Hot bending process
System cast aluminum door
Thermal insulation
Sound insulation and noise prevention
Wind pressure resistance system
Waterproof
Anti air tightness
Anti-theft security system
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