... 4.non-slip plywood 5.Adjustable height SpecificationsAluminum roof truss 300*300mm Square Truss Outdoor Event Aluimium Stage TrussAluminum roof truss4000*400mm ... sets) (Max Width :3 m) 3.Exhibition Construction ServiceIron Truss ,Stage Truss,Aluminum Truss,Speed Max4.Portable Display StandRoll Up,X Banner Stand ... ,Pop Hanger Banner ,Flagpole,Poster Stand,Tent,Umbrella etc. aluminum truss