| 摘要 |
<p>The material has a marking (2) with defined angles provided on large-area sides of the material in a longitudinal direction. The marking is confirmed by a discoloration that deviating from the other coloring, and is connected with a coinage. The marking is obtained in a furnace by a heat-abrasive or heat-strengthening fixtures during hardening of a wood fiber-binding agent-mixture.</p> |
