| 摘要 |
A toolbox includes at least one case having a bottom panel, two side panels, a back panel and a top panel connected together to form an internal space. The connecting devices between these panels are integral keys and are corresponding slots respectively formed on the abutting surfaces on the panels. Consequently, these panels can be connected to one another without separate fasteners. A locking lip is formed on the top edge of the side panels and the back panel, and a corresponding locking wall is formed on one side of the top panel opposite to the back panel. Multiple ridges extend out laterally from the top edge of the locking lip and locking wall so a seat or a working table can be attached to the top of the toolbox to make the toolbox more useful.
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