| 摘要 |
An entry board suitable for use during drilling of an integrated circuit board includes a main laminated structure sequentially formed with a base layer made from wood fibers, a reinforcing layer of a thermosetting resin, and a hard layer of a UV-cured resin. The laminated structure further includes a coating layer interposed between the base layer and the reinforcing layer, or a paper layer interposed between the reinforcing layer and the hard layer. The coating layer or paper layer has a color different from that of the base layer.
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