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Fire-resisting doors are usually required to be self-closing, in accordance with building regulations. (other than those to locked cupboards, service ducts, and internal doors in flats and dwelling houses)

Surface mounted door closers are the most efficient and economical means of controlling doors and are thus, the most commonly used type of closers. But, because they are exposed to view, there are some installations where a concealed door closer better suits the needs of the owners and users. On exterior openings, surface door closers should always be installed on the interior side of the openings to protect the closers from fluctuations in temperature. On interior openings, good practice dictates that surface door closers be installed on the room side of the openings, out of the corridor.

A ​door closer is an adjustable and spring-loaded mechanical arm that closes a door automatically after it has been opened. Door closers are usually filled with hydraulic fluid, which dampens the door swing and controls its operation. Installing a door closer adds a level of control to your door's safety and security.

Door control hardware refers to door closer, floor springs, hinges, latches, locks, door stoppers, etc., which are widely used in wooden doors, glass doors, metal doors and other door hardware accessories. Control door hardware is a kind of daily-use metal products that are extremely important to people's daily life. Floor springs and door closer are the most important part. They are generally used in public places where the people frequently accessed, such as shopping malls, office buildings, residential buildings, exhibition halls, etc. It can ensure that after the door is opened, it will remain normally open or can be closed to the initial position in time.

A door closer prevents damage caused when doors open or close too fast. The device causes doors to close slowly, eliminating the issues associated with slamming doors. Unlike commercial door closers, residential door closers are available in a variety of colors and styles. Installing a door closer is an easy process that requires following a few straightforward steps.

The door closer is a hydraulic device similar to the spring on the door head. When the door is opened, it can be released after compression, and the door can be closed automatically. It has the function of spring door, which can ensure that the door can be closed to the initial position accurately and timely after being opened.