The uses of 90-degree positioning door closers include: anti-theft, fire prevention, wind protection, energy saving, convenience and so on. When the door is pushed open, the door will automatically close and lock, saying goodbye to the thief's crime; after installing the door closer, the door will be positioned 90 degrees after opening to resist super strong winds without being blown. Lelang Hardware's RDC-05 hydraulic 90 degree door closer meets the above conditions, suitable for door use up to 80-110kg, and its characteristics of anti-corrosion, durability, mute, etc. are "favored" by consumers.