| 摘要 |
PROBLEM TO BE SOLVED: To provide a sofa which allows users to choose functions that fit their variety of work styles at their offices. SOLUTION: The sofa 1 is equipped with a seat part 2 with a plurality of grids 23 constituted by a lattice-shaped structure. Using the grids 23 on the seat part 2 allows attachment of optional members 4 such as an auxiliary top plate 43 and a seat cushion 41 to the seat part 2.
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