加装闭门器和滚动轴承式合页，使门扇能够轻松自如自动开启，且无任何杂音和碰撞。
Installation of door closers and rolling type hinge, so that can ease the doors open automatically, and without any noise and collisions.
加装闭门器和滚动轴承式合页，使门扇能够轻松自如自动开启，且无任何杂音和碰撞。
Installation of door closers and rolling type hinge, so that can ease the doors open automatically, and without any noise and collisions.
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