| http://www.w3.org/ns/prov#value | - onductive member has a thickness substantially equal to a thickness of the core part. [0018] A first circuit board production method of the present invention is a method for producing a circuit board that includes not less than two wiring layers, an insulator layer for electric insulation between the wiring layers, and an inner-via-hole conductive member provided in the insulator layer in a thickn
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