... be used for big events truss structure or indoor exhibitions 2. Aluminum Truss Material All our Trusses are ... ×3mm , and 50×4mm4. Truss Braces : 32×2mm , 25×2mm5. Screw Truss Size200×200mm, 300×300mm , 300×400mm , 350×350mm , 400 ... Trusslader Trusscircular Truss 9. Usage Truss systems included in exhibition truss , small lighting truss , audio truss , speaker truss , gentry trussThose truss systems is ...