... structure 20000mts, secondary steel 15000mts, various profiling steel sheet 300000 sqm per annum. Enterprise cultureGet to know myself ... plate or aluminum paper / rock sandwich panel etc.Window: Pvc window or aluminum window or skylight Door : sandwich panel ... electrical roller door etc.Accessories : down pipe (pvc ), gutter, ventilator, deck sheet, foundation bolts, normal bolts,bracket bolts, shearing ...