| 摘要 |
<p>The advertising element has single-layered, flexible or rigid portion made of plastic or metal which is colored by adding dye in natural milk color tube (1). The wall in peripheral area is in form of letter U whose center portion is bulged to form a groove (2) along whole element. The strip (4) is inserted into groove and the groove is closed. The side surfaces of strip are connected with the upper lateral faces (5) of groove. The recesses (6) are formed in groove among which protrusions (7) are engaged. A longitudinal groove (8) with slot-shaped recess (9) is formed in strip.</p> |
