Abstract: The invention provides a side frame, which comprises a frame body formed by connecting vertical columns and a horizontal bar; and a plurality of supporting arms provided on the frame body; the vertical columns are provided with a plurality of mounting holes, two ends of each of the supporting arms are respectively connected with mounting holes of two of the vertical columns of the frame body; one end of the horizontal bar of the frame body is provided with a fixing device for installing the frame body to a wall body. The present invention also provides a storage rack with side frames. The storage rack comprises at least two side frames and a plurality of boards, each of which is positioned between two side frames, and can be detachably connected to the supporting arms on the side frames. The side frames of the present invention have simple structure and strong practicability.

Abstract: This invention provides a supporting arm for a storage rack, comprising a body; a supporting portion for installing a board; and a first tab and a second tab for engaging a frame body structure; the body is provided with a vacant portion for the second tab to be engaged with the frame body structure; the supporting portion is connected to the body; the first tab is provided at one end of the body, the second tab is disposed near the other end of the body and facing the vacant portion, so that the supporting portion for installing the board is fixed on the frame body structure through the first tab and the second tab. The supporting arm for a storage rack of the invention has a simple structure and strong practicability. Not only can the supporting arm form a stable connection with a frame body structure, it also provides the storage rack better support effect, thereby improving the structural strength of the storage rack.

Abstract: An adjustable tray system is provided. The adjustable tray system may include a working table and a support member, where the support member may attach the working table with a supporting structure. The adjustable tray system may also include at least one adjustment mechanism. The adjustment mechanism may couple the working table with the support member such that an angle is formed between the support member and the working table. The adjustment mechanism may also allow angular adjustment of the working table such that the working table pivots about a rotation point of the adjustment mechanism. The adjustable tray system may be used in conjunction with a height adjustment platform, such as for an adjustable keyboard tray of a height adjustable desk.

Abstract: A height adjustment mechanism is provided. The height adjustment mechanism includes a lifting arm, a driving mechanism configured to drive and lock the lifting arm, and a control switch configured to control the driving mechanism; the driving mechanism is coupled to the lifting arm, and an angle is formed between the driving mechanism and the lifting arm. A height adjustment platform and method is also provided. The height adjustment platform includes a first working table, a bottom bracket, a lifting arm, a driving mechanism configured to drive and lock the lifting arm, and a control switch configured to control the driving mechanism; two opposite ends of the lifting arms are separately coupled to the first working table and the bottom bracket, the driving mechanism is coupled to the lifting arm, and the angle is formed between the driving mechanism and the lifting arm.