The big tent are widely used for party, outdoor exhibition,outdoor wedding, trade fair, products showing, celebration, 1,The clear-span of BT-25m is 25m span. 2,The length of BT-25m could be30m,35m,40m and +5m every unit more. 3,Frame use hard pressed extruded aluminum alloy 6N01 /T6(13HW).4,The fabric is PVC-double coated polyester textile. It's strong quality with waterproof, anti-mildew, flame ...