Folding doors are mainly used for partition and screen in workshops, shopping malls, office buildings, exhibition halls and home decoration. Both inner and outer doors can be installed and used. It can effectively prevent temperature, dust, noise and shelter. After the folding door is opened, it can be pushed to the end, occupying only a little space on the side, so it is very space saving, and the light will not be blocked, which can make the house more bright. The folding door has the advantages of elegant appearance, novel style and various colors. It is easy to use, push and pull freely, and effectively saves the occupied space of the door. Folding door has light door constitution, thermal insulation, moisture-proof, fire retardant, noise reduction and sound insulation, acid and alkali resistance, corrosion resistance and other chemical stability. It is easy to clean and change color. It is suitable for kitchen, bathroom and toilet. Simple and fast installation, long service life and convenient maintenance.