| 摘要 |
<p>The medium has a circulating fixing frame, where four parts of the frame are connected by an angle bracket. A printed textile material, serving as advertising surface, is stretched by a rubber piping that is placed in a groove of the frame. Low voltage LED spots or solar collectors provide direct illumination. The medium is fixed with suction cups, foldable clamps made of glass or spring loaded telescopic stand. The frame is made of metal, plastic, wood, or other material.</p> |
