... Door Closer 1. Manual open, automatic close, 2. No motor, no drive device, energy saving 3. For double leaf Haudraulic Door ... device, users can open thedoor with hand and the door will close automaticallyClosing force and speed can be easily ... used for kitchen door and separated door of home, Hospital, Hotels,offices etc. No special maintenance are required.2 leaf, bi-parting Haudraulic Door Closer ...