{HEAD ~ A method} for planarizing {TAIL ~ a circuit board}, has a step of fixing a circuit board having wiring layers on both sides to a board having a flat surface through an adhesive layer, wherein said circuit board is pressed from above by a flat member on fixing thereof 
for planarizing
{ HEAD ~ A method } for planarizing { TAIL ~ a circuit board } , has a step of fixing a circuit board having wiring layers on both sides to a board having a flat surface through an adhesive layer , wherein said circuit board is pressed from above by a flat member on fixing thereof
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