A height-adjustable multifunctional table includes a base, at least two independent and height-adjustable table legs, a retaining frame, a tabletop, a power adapter, a controller, and a hand controller. Through the wireless connection between the hand controller and the controller, the controller is used to control a driving mechanism, and the driving mechanism drives a movable inner tube to move up and down so as to adjust the height of a tabletop. The user only needs to control the hand controller to adjust the height of the tabletop. The height adjustment is easy and more convenient and saves time and labour.

Retractable screen (1) and keyboard (2) assembly for tables, comprising a supporting structure provided with a frame (3) defining a housing (4), and with a supporting frame (5) on the table, the screen (1) being able to rotate from a position in which it is stowed inside the housing (4) and flush with the supporting frame (5) to an elevated use position, a platform (6) arranged in the housing (4) on which the keyboard (2) rests, means for guiding (G) the platform (6) vertically from a lower position which leaves space for the stowed screen (1) and an upper use position, and further comprising a base (7) for the screen (1) which can rotate about a fixed axis () in relation to said frame (3), the screen (1) being mounted on said base (7), the screen (1) and base (7) assembly being able to rotate about said axis () from the stowed position to the use position.