... cheap, economical building material 3.used for dorm, office, warehouse, fence, factory,workshop Widely used in common steel structure and storey ... the panel30-200mmMaterial Of Top/Back SheetCorrugated Color Steel Sheet(0. 326mm,0.376mm,0.426mm,0.5mm,0 ... insulation4. Economical and environmental friendly,can be recycle. Applicationswidely used as roof and wall panel in warehouses, factories, exhibition ...