来源限制：只从同一个制造商获取每种门用五金类型。
B. Source Limitations: Obtain each type of door hardware from a single manufacturer.
操作叙述：描述由电气化门用五金控制的门操作。
Operation Narrative: Describe the operation of doors controlled by electrified door hardware.
与机械门用五金一样，由同一制造商提供电气化门用五金，除非另有说明。
Provide electrified door hardware from same manufacturer as mechanical door hardware, unless otherwise indicated.
采用德国名牌折叠门专用五金件，上滑轨下滑槽结构，保证了折叠推拉顺畅、开启灵活。
Germany famous brand hardware parts and upper rail and bottom runner design ensure smooth operation.
采用德国名牌折叠门专用五金件，上滑轨下滑槽结构，保证了折叠推拉顺畅、开启灵活。
Germany famous brand hardware parts and upper rail and bottom runner design ensure smooth operation.
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