The surface of the coated purification board is covered with a layer of color film, which can make the steel plate have a purification effect, and is widely used in hospitals and workshops. The properties of the color film and substrate make the service life of the steel plate longer. The film-coated purification board is also convenient for decoration. It only needs to be compounded with corrugated board or rock wool and other materials, and can be installed by using keel. Compared with traditional decoration, it saves time and effort, and does not require paint, lime, putty and other materials. Quick and clean. Now many hospitals, libraries, and electronics factories have chosen this kind of steel plate for decoration.