... section:300x300mm,etc 4.wedding roof truss,lighting truss truss for wedding stage detail: Truss Material: Aluminium6061-T6 or 6082-T6 ... so on.Features:Lighting truss hanging lights,loud speaker.Suitable for displays, exhibition, performance show, concert, event etc. Finish in a ... ,layer truss,background truss,speaker truss,LED truss,scaffolding,DJ flight case,aluminum bar desk,scaffolding,and so on.