1990s school computer desk 3d model

Generate a single 3D asset: a Chinese school 1990s computer lab workstation desk, matching classic CRT-room style. Boxy steel frame painted light gray/cream, rectangular footprint (about 90cm W x 65cm D x 75cm H). Two-level structure: a flat top desk surface for a bulky CRT monitor, and a pull-out keyboard tray directly underneath (wide tray, metal rails, slightly recessed handle lip). Optional second thin sliding tray layer (keyboard + mouse) like old school computer desks. Include simple side support panels, crossbars, and an under-desk shelf/space for a PC tower (no tower included). Edges have plastic trim, rounded front corners, visible screws, simple industrial construction. Materials: aged painted metal with scuffs, small dents, chipped paint on corners, mild rust at joints; slightly dirty areas near the tray handle and lower legs. Realistic PBR, clean hard-surface topology, beveled edges, game-ready scale, centered pivot, isolated object, no chair, no computer, no props.