... ,etc 4.wedding roof truss,lighting truss square screw truss system detail: Truss Material: Aluminium6061-T6 or 6082-T6 Length ... etc.Application:We can design diverse shapes to hang acoustics,speaker, lighting and so on.Features:Lighting truss hanging lights, ... assembly stage,folding stage,bleachers seats,layer truss,background truss,speaker truss,LED truss,scaffolding,DJ flight case,aluminum bar desk ...