Abstract: An improved collapsible supporting rack structure with its bearing strength reinforced, the structure is comprised of: a plurality of link sets with their links in pairs pivotally cross-linking with each another; a plurality of connecting seats connected each with more than one link, thereby the link sets connecting with the connecting seats form a supporting rack; the structure is characterized by that: the structure is provided further with at least a post set; each post set includes at least two mutually parallel posts respectively located at the two lateral sides of a link set, the post has on each of the two ends thereof a linking block; the linking block includes a post seat fixed onto the post and a slide block slipped over a neighboring link.

Abstract: A folding chair of the type having a frame constructed of pivotally connected scissors like “X”-shaped structure strut members supporting a sling seat, the lower ends of which form two front feet and two rear feet and the upper ends of which form two front seat corners and two rear seat corners of the chair. The folding chair includes a pair of upright telescopic supports mounted between the two front seat corners and the two front feet. The upright telescopic supports extend when the frame is folded and collapse telescopically when the chair is deployed. A pair of uprights may extend up from the rear feet and through the rear seat corners so as to extend above the rear of the sling seat to provide a backrest.