The invention discloses the chairs of a prefabricated components to have a structure, wherein a lower support member, seat piece is assembled in a laminar manner on multiple middle rank laminate components and one, and when upper seat piece is opened, a memory space is formed in upper seat piece. Since chair has memory space wherein according to the present invention, it can store the property or clothes of user, have a structure, and wherein consumer is used as a finished product assembly product after a purchase. Therefore, sea-freight and transport are that readily, transportation cost is reduced, and are highly adjusted according to the quantity of intermediate laminate component.
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