| 摘要 |
<p>The closing cover consists of light mattress of aluminum or of plastic, which is enrolled in the light box vehicles of load. The covering is implanted in a casket or protection box with a de-roller operation that unfolds and folds the guided in corresponding lateral guides. The covering fits and slides channel of drainage with overflow pipes and close it by catch window or key by subjecting and tighting the trap door of the load.</p> |
