... in construction engineering.export: Australia, Malaysia, Indonesia,Italy.... galvanized steel frame,steel ceiling and drywall systems,Used in construction engineering.export ... ,Furring channel:28x38x0.55mm,50x19x0.5mm,35x12x0.3mm,47x17x0.5mm,Wall angle:20x20x0.45mm,25x25x0.45mm,30x30x0.45mm,Omega:58x35x17x7x0.45mm ...