In addition, rapid rolling door folding door as industrial application professional stronger or more.

另外，快速卷门作为专业性更强的工业折叠门应用也比较多。

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Protection device: rapid rolling door is arranged at the bottom of the photoelectric device, touch the obstacles in the process of closing down, stop immediately rebound.

保护装置：快速卷门门柱底部装有光电装置，在关闭的过程中触及障碍物，立即停止下降反弹回升。

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