aluminum stage structure: Layer truss system in dispaly Good for audition and version Quick and ... ,3m,4m,customizer1 meter truss N.W:8 to 20 kgsPacking: carton,air bubble filmFeature:non rust,light weight,strong,easy to ... stage,assembly stage,folding stage,bleachers,layer truss,background truss,speaker truss,LED truss,scaffolding,DJ flight case,aluminum bar desk,and so on. truss exhibition stand