... :300x300mm,etc 5.stage lighting truss, truss Stage truss aluminum truss lighting truss detail: Stage Truss Material: Aluminum alloy 6061-T6 ... ,speaker, lighting and so on. Features:Lighting truss hanging lights,loud speaker.Suitable for displays, exhibition ... stage,assembly stage,folding stage,bleachers,layer truss,background truss,speaker truss,LED truss,scaffolding,DJ flight case,aluminum bar ...