adops hot-galvanized thin steel structure,arc top tops use carbonated hollow PC plate covering,all surround can use PC plate or other materials cover greenhouse main characters: arc top more suits rain and water slip,reduce wind resistance,improve greenhouse load wind ability,reduce condensation drops,reduce because greenhouse too big cause bacteria on top of greenhouse set roof vent,meet the hot air flow direction,convenient to air flow and heat loss,in summer convenient to reduce temperature and reduce humidity big span,big column space,high and big this kind greenhouse can be used in Eco-restaurant,sight seeing restaurant and large flowers production site. Top covering materials can use double layers carbonated hollow palte,double layers gutter, high efficient condensation,in winner can reduce fuel consumption. single span single film greenhouse technology data: covering materials:top covering 12-15 silk PO film,all surround cover po film glass,,sun-light plate span:6.4m/8m/9.6m eaves:2.2m-6m column spacing:4m roof vent:usually gear and rack open vents and ventilation side window:rack outside push window,pull-push window,electric vertical push window,rooler double span double film greenhouse technology: covering materials:top cover 12-15 silk PO film,surround cover PO film,glass ,sun-plate span:6m/8m eaves:2.2m-6m column spacing;4m matching equipment:electric outside shading,inside shading,side open window,increase temperature,reduce temperature,intelligence control system