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The swing door has a single open swing door and a double open swing door: a single open door has only one door panel, and a double open door has two door panels. The swing door is divided into one-way opening and two-way opening. One-way opening can only be opened in one direction (only push in or out). Two-way opening is that the door can be opened in both directions (such as a spring door). The swing door is divided relative to other opening methods, because the door also has a moving open, an upturned, a roller lift, a vertical lift, a rotary, and the like.
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