Aluminum-Alloy Structure Tent Tent Span is from 3m to 30m. 1. Frame use hard pressed extruded Aluminum Alloy 6061 /T6 (13HW) 2. The fabric is double PVC coated polyester textile. It is high quality at waterproof, flame retardant to DIN4102 B1, M2, UV resistant. 3. The maximum allowed wind speed is 100KM/h. The security and variability of our products have reached the standard of similar products abroad. 4. The optional accessories are wooden floor, glass door, glass wall, PVC hard wall, ground anchors, sidewalls with PVC-clear window, rain gutters, decoration ceilings and inside curtain. 5. Widely used for party, outdoor exhibition, outdoor weeding, trade fair, celebration, sports event, military solution, temporary warehouse and workshop