Specifications: Span width:8m;length:18m to 60m; height: 2.5m to 3.5m;roof height:wall height + 1.8m;optional system: ventilation 10-15 years 5. Covered by 3-ply (pe+eva material) poly film (plastic film), anti-uv, anti-drip 130micron/150micron/180micron/200 micron thickness for your choice 6. Wind load: 130km/h, snow load: 0.28kn/m2, max. Rainwater running capacity140mm/h 7. All connectors are jointing by bolt, nut and washer and so on. No welding. By full container