Production of aluminum truss butterfly, consists of the following components: 1, four aluminum tube (round 22mm, thickness 1.5mm, double track, oxidation), 2 discs (strength steel, punching, 1.5mm thickness chrome), 3, connector (50mm * 19mm hex on the edge, thread, chrome), 4, universal joints (aluminum, iron two materials, the outer diameter of 220 * 220, can be removable), 5, connecting pull head (by spring, screw, head, nut, Wrench Five-piece combination, Vanke display equipment newly developed patented product). Product specifications are: 220,160 two kinds of outside diameter between 0.3 m to 3 m length, can be customized. Single truss can withstand 800 kg force, can withstand 320 kg within 10 m span, hang lights, products, printing and so on will not have the slightest bend, sink, this truss features: beautiful, strong brightness, no rust, repeated use, withstand strong intensity, disassembly is simple, easy to transport and storage. Can be used for large-scale concerts, conference hotel, ordering background frame, light frame, gantry, gate, etc., especially the large-scale exhibition to make 3 * 3 standard booths, special equipment 3 * 6,3 * 9,6 * 9 Booth and so well received by consumers.