| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed circuit board.SOLUTION: The printed circuit board is provided with a router machining line to be partitioned into a unit region in which a plurality of unit substrates are formed and a dummy region enclosing the unit region. The unit region and the dummy region are formed in a plurality of layers, and the printed circuit board includes detection coupons formed on each of the plurality of layers. |
