1,aluminum truss,spigot truss, 2,different size 3,light ... frame, arc frame Color: Optional. Connection: screw or bolt Canopy:sun canopy ,rain canopy. no canopyCertification:CE, TUV, ISO9001 certificatedRemark: ... TUV, ISO9001 certificatedStageAdjustable Height:0.6-1m.0.8-1.2m,1.2-1.6m,1.6m-2m Frame: aluminum alloyTop floor: can be ... set up and remove and moveable 5mx3m background truss,promotion truss