| 摘要 |
<p>The present utility model discloses a machine extruded carbon bar, it is comprised of a carbon core layer which is extruded by machine and protecting layer which coated around the carbon core layer, the shape f carbon core layer can be cuboid, cylinder or sphere, such carbon bar has many advantages such as consistent shape, difficult to brake up, good appearance, high valuble, and the like, if colorful component is incorporated into protecting layer, it can facilitate the use of the carbon bar.</p> |
