China door factory Fast Aluminum Hard Shutter Industrial Roller Spiral Door high speed Spiral door on China WDMA color:Blue Product Certificate for Adopting International

Product Certificate for Adopting International Standard

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Frame Size

muti slope

height:523

China door factory Fast Aluminum Hard Shutter Industrial Roller Spiral Door high speed Spiral door on China WDMA color:Blue Product Certificate for Adopting InternationalPromotion!!! Product Details What is the feature of high speed spiral door? 1) Aluminum Alloy lathes and foam inserted and viewing windows as standard 2) Emergency handle equipment for surviving 3) Given frictionless for lathes operation to longer the using life 4) Weight balance with springs and belt 5) Basically no maintenace on the whole door 6) Good combination of outside door application and high cycle operation in warehouse 7) Smooth and fast