... ,circle truss 2>the best price & quality The cheapest bolt truss,screw truss,display truss,lighting truss,square truss,exhibition ... ,duty truss,roof truss,tent truss,box truss.1.ALUMINUM SQUARE SCREW TRUSS,BOLT TRUSSTriangle truss & square trussScrew truss & spigot trussTruss ... or out door celebration and so on.2.ALUMINUM SQUARE BOLT TRUSS 1.>Lighting truss/tower truss/stage truss adopt 6082-T6 which ...