A method enables gypsumfiber board to be manufactured such that recessed areas are formed on the same face of the cut wallboard on all four edges without interrupting the production line. The starting material include polar gallium nitride. A custom bus or a known serial network bus such as CAN or SIRCOS may be used. Therefore, it is possible to prevent the deformation of the board and stress from being repeatedly applied to a soldering portion of the electronic part. The pump can also be used for atomizing liquid, by drawing liquid from a supply that is pumped from the distal end to an open proximal end of the inner needle where the liquid is discharged by atomization into the atmosphere.