1,aluminum truss,spigot truss, 2,different size 3,light truss,stage truss,build truss 4,long history factory,good credit Material size ... :CE, TUV, ISO9001 certificatedRemark:we are professional manufacturer of truss, we design, making-up, setting-up, according to ... metereasy to set up and remove and moveable layer truss,speaker truss Verified Information This information is Verified by Bureau Veritas ...