... 5.fliters,protection Round hole perforated metal1,Feature:Perforated Metal with various designs with good permeability and decorative effects ... customer needs.3,Material:Stainless Steel,Carbon Steel, Galvanized, Aluminium, Brass, Copper, Plywood,Fiberboard,Rubberboard,woodboard,Pasteboard. Al ... plate and others Composites.4,The Characteristic of Perforated Metal: Can be readily formed Exact size Can be ...