| 摘要 |
An adjustable support system of seat structure includes two side supporting units foldably extended from two vertical sides of the back panel, at least an elongated element having a predetermined length of holding portion extended from the back panel through the two side supporting units respectively, and an adjustable locker securely locked up two free end portions of the elongated element for adjusting the length of the holding portion of the elongated element, so as to adjust a folding angle between each of the side supporting units and the back panel.
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