... . Shape: Ladder truss, triangle truss, sqaure truss, round/circle truss, arc and anomalistic trussProject: tower truss system; with flat ... screen and banner on the truss, suitable for displays, exhibitons, show, concert, performance, events, etc., finish ... in a snap, very strong, convenient for set up and transportation.Certificate: TUV, ISO9001Connector of 1-beam truss ...