aluminum truss frame: 1,good stability ,lightweight,6082T6 material 2,TUV aluminum truss Outdoor big event stage truss space frame Popular & fashion truss space frame *strong & durable space truss frame *outdoor stage space frame *light layer truss systemthe parameter of the aluminum truss frame: Item NoACE A4040Product namealuminum truss framemodel400*400mmTubeMain tubeBraceBranchdiameter50* ...