The compact frame is assembled from small parts, so once it is dusty, it is more troublesome to clean up. Every corner should be cleaned up. The side door and the two ends of the compact frame are not strictly sealed, and the shelves are dense. It can move on the track, and every time it changes a parking position, it will change accordingly. The existence of a large number of gaps is the place where the dust hides. It must be noted, otherwise it will bring certain harm to a large number of books, like some Where the gap is small, if the dust cannot be removed, other measures must be taken, that is, secret weapons. Generally, for these places, we may wish to use small objects such as tape or cotton swabs, so that it is difficult for us to Is it possible to quickly remove the dust, it should be clear that the long-term parking of the shelves should choose a well-closed position, and each time after use, it should be returned to the original position.