| 摘要 |
<p>The device has reaction surfaces, which exhibit a coppery surface and are produced in connection with water fungicide and/or bactericide. The water fungicide and/or bactericide can partly moisten a roof. Fastening recesses (3) are arranged within a border area of the device. The recesses are spaced in such a manner that fastening units (4), which is mounted on the roof, can intervene in the recesses.</p> |
