| 摘要 |
The shelving unit includes a post, a sleeve and a fastener. The post has a plurality of positioning slots. The sleeve has an inner side formed with a flange, an outer side formed with a slant trough, and a foolproof block being protrudent from the slant trough. The fastener for being mounted on a shelf has two parallel slant ribs and an intermediate trough formed between the two slant ribs. The fastener is seated around and engaged with the sleeve by inserting the slant ribs and the foolproof block into the slant trough and intermediate trough, respectively.
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