simple multi-span greenhouse Simple multi-span greenhouse is based on full steel frame greenhouse improve and formate a new greenhouse,it's between arc greenhouse and intelligent space then formation a new multi-span greenhouse. This greenhouse investment very low,belongs to economic greenhouse,suits most of chinas area. But in germany we will by your weather report and climate condition and soil building condition desin and built for you. main technology data: big span column type sunlight greenhouse adopts concrete as support column,galvanized pipe and thickness bamboo as greenhouse frame,this kind greenhouse low building cost,durable, land use area big,this kind greenhouse very suits to spring and autumn vegetable plant and breeding greenhouse This greenhouse usually span is 8-23m,building height is 3-6m