| 摘要 |
A porous sheet substrate that can improve a mounting work efficiency of porous sheet pieces without damaging a main body to which the porous sheet pieces are mounted. The porous sheet substrate is for cutting off porous sheet pieces, and has the structure such that cut portions and non-cut portions are formed along outlines of porous sheet pieces to be cut, and the porous sheet pieces are cut off against the non-cut portions by pushing the porous sheet pieces to be cut.
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