shed structure GHD&SGS certified precision design efficient,money-saving prefabricated construction Model numbershed structure meterialQ235 and Q345surfaceHot-dip galvanized or paintedRoof and wall panelEPS,PU,Rockwool sandwich panel.windowPVC or Aluminum AlloydoorSandwich Panel Sliding or rolling up doorCost-effectiveCheap cost,fast erection compare to concrete buildingdurability 50 ...